Chemistry Middle School

I WILL GIVE 20 POINTS AND BRAINLIEST Nuclear energy, elastic energy, chemical energy, mechanical energy, sound energy, and thermal energy are examples of??

Answers

Answer 1

Answer:

answer IS KINETIC ENERGY

Related Questions

A grade 8 students burnt white phosphorus in the air contained in a bell jar. what will be the volume of the renaming air in the bell jar.
A. 20%of the air
B. 50% of the air
C. 25% of the air
D. 79%of the air

Answers

try d cuz if im not mistaken if you burnt white phosphorus all the gas is going to take most the air
D it compresses I think

I AM ON A TIMER BE QUICK!! Which material would result in the greatest amount of energy transfer?

A. An absorber that is dark in color and rough.
B. A reflector that is dark in color and smooth.
C. An absorber that is light in color and rough.
D. A reflector that is light in color and smooth.

Answers

Answer:

A. An absorber that is dark in color and rough

A. An absorber that is dark in color and rough

Acceleration is measured in _______ units.

Answers

Answer:

meters/seconds^2 or m/s^2

Explanation:

acceleration is measured in meters/second[2]

i hope that helped.

if i have 17 apples and i eat 17 apples how many pears do i have?

Answers

Answer:

If you eat all 17 apples, you will not have any apples left. However, the number of pears you have is not related to the number of apples you ate. So, the number of pears you have is unknown and not affected by the number of apples you ate.

The number of pears is irrelevant for the information given. Therefore, there is not enough information to tell and the number of pears remain unknown.

What do the periods in the periodic table tell us?

Answers

Answer:

When you look at the periodic table, each row is called a period (Get it? ... All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons.

Explanation:

Periods are called the horizontal line of the periodic table.Each period is consistent with the progressive occupancy of the orbitals in an atom valence shell. Longer periods correlate to the occupancy of the d subshell orbits.All elements have the same number of atomic orbits during a period.A row of chemical components would be a period inside the periodic table.Every following element in the same period has more protons than its predecessor and is less metallic.It enables quick reference to element information, such as atomic mass and chemical symbols. The schedule of a periodic table also allows scientific researchers to see patterns in element characteristics, such as electronegativity, ionizing energy, and nuclear radius.

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What do the periods in the periodic table tell us?

Question This is a Science Test 15 POINTS OR MORE POINTS!

The following picture contains four beakers with four different colored solutions, light blue to dark blue. Which solution is the most concentrated?

A. the second solution from the left
B. the first solution (left-most)
C. the fourth solution from the left (right-most)
D. the third solution from the left

Question This is a Science Test 15 POINTS OR MORE POINTS!The following picture contains four beakers

Answers

Answer:

darker means more concentrated!!

the answer is d

Explanation:

EX:the more color you put in frosting the darker it gets

the last one (the deep blue ,the darkest one) because it is a sign that it is more concentrated there

im giving brainliest

Answers

Answer:

a

Explanation:

just needed the points, sorry

Answer:

I'm confused what is this?

Explanation:

In the Middle Ages, most scientists believed that
the world was made from four simple elements
and that almost everything was a mixture.
Which type of pure substance had they not
yet discovered?

Answers

Answer:

Aether

Explanation:

Aether differed from the four terrestrial elements; it was incapable of motion of quality or motion of quantity.

The universe was composed of four basic components, and nearly everything was a combination. Thought the four elements of Earth, air, fire, and water made up all matter.

What is element ?

A chemical element is a species of atoms, including the pure material made entirely of that species, that have a specific number of protons in their nuclei. Chemical elements, unlike chemical compounds, cannot be reduced by any chemical process into simpler molecules.

Most of the elements are made up of pure materials. Gold, copper, oxygen, chlorine, diamond, and so on are just a handful of them. Pure substances also include mixtures like water, salt or crystals, baking soda, and others.

More than 99 percent of the atoms in your body are made up of the four most prevalent elements: hydrogen, oxygen, carbon, and nitrogen. Your body has them all, largely as water but also as parts of biomolecules including proteins, lipids, DNA, and carbs.

Thus, the four elements of Earth, air, fire, and water made up all matter.

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What is the chemical test for water

Answers

The temperature testing

Copper(II) sulfate in its purest form is white. Because it is devoid of water, it is also known as anhydrous copper(II) sulfate. A sample of copper(II) sulfate becomes blue when water is present.

• Temperature measurements

Temperature testing aids in determining the pace of biochemical reactions in an aquatic environment, as well as whether they can occur at all. If the water temperature is too high, the water's ability to contain oxygen is reduced, and organisms' ability to withstand certain contaminants is reduced.

• Checking the pH level

This instrument determines the acidity of water. The majority of aquatic species can only thrive in a pH range of 6 to 8.

• Test for chloride

Chloride may be found in both fresh and salt water. Mineral dissolution and industrial pollutants, on the other hand, can worsen its levels.

•  Testing for salinity

The total amount of non-carbonate salts dissolved in water is calculated. The salinity of your groundwater can tell you how salty your topsoil will become as the water table rises.

• Oxygen Dissolved Test

The amount of oxygen dissolved in water is measured with this device. Aquatic life can't conduct cellular respiration without it, hence it's an important indication of water quality.

•  Test for turbidity

Measures the quantity of suspended particle matter in the water, or, to put it another way, how clear the water is. When there is a lot of turbidity in the water, photosynthesis suffers because light can't get through, which raises the water temperature.

If you need more let me know!

When you mix red, blue, and green light you get white light. When you mix red, blue, and green paint you get black paint. Explain why you think this happens.

Answers

Well if you think about brown as it occurs naturally like a tree trunk it’s only reflecting the wavelengths that make us see brown and the reason we see white when mixing light it has to do with evolution and how we are able to see in daylight so things such as flashlights are representing all the colors the sun has when it is daytime hopefully that helped

A student rolls a ball at different speeds to try moving a box of sand.

Answers

Answer:hello friend!

Explanation:

IM not sure what your talking about but ima try the best i can

So lets go to newtons laws of motion, basically he said, more force, more movement. But it depends on how heavy the object is.

Sooo The more heavy the box of sand is, The more force he would have to use to move it. You can also relate this to how much he wnted to move it :)

Sorry if this didnt help :(

Uh what you’re going to have to give me more information about what you’re talking about

fill in the blanks. The celestial bodies in space move about in predictable paths called
____ . As a result, a planet is able to ____ around the Sun. Other objects in the solar system also orbit the Sun. These objects include ____ and comets.

Answers

Answer:

Magnetic fields, revolve, asteroids

The celestial bodies in space move about in predictable paths called ORBITS. As a result, a planet is able to REVOLVE around the Sun. Other objects in the solar system, also orbit the Sun. These objects include ASTEROIDS and comets.

help plz this is sic

help plz this is sic

Answers

It is a chemical change as new substances which cannot be changed back (e.g. carbon dioxide) are formed.

Hope this helps!

Answer: It is a chemical reaction

Explanation:

If a student pushes a book across a table with a force of 6 N and the force of friction is 4 N. What is the net Force acting on the book?

Answers

Answer:

The net force is 2 N in the direction the book is being pushed.

Explanation:

The answer is 2N because when the forces are acting in opposite directions, subtract.

The speed at which a nitrogen molecule’s particles are moving increases. What will happen to the thermal energy of this molecule?

A) The thermal energy of the molecule will increase.
B) The thermal energy of the molecule will not change, but its mass will change.
C) The thermal energy of the molecule will not change, and its mass will remain the same.
D) The thermal energy of the molecule will decrease.

Answers

Answer

The thermal energy of the molecule will increase.

Explanation:

Increasing the speed at which the particles are moving cause atoms and molecules to move faster and collide with each other. This increases the thermal energy.

Please help me por favor :'(

Please help me por favor :'(

Answers

More volume, takes longer to heat all the molecules.

please help asapppp

if you cant read the question is says : "sort the factors that affect and impact growth of plants. Drag and drop each word into the correct category in the chart below. Some words may go in more than one category"

pls donttt answer if you dont know.

please help asappppif you cant read the question is says : "sort the factors that affect and impact growth

Answers

Answer:

well i can't see half of the picture. unless im blind.

Explanation:

Basically genetic means that they’re things that the plant controls. For example: what it tastes like and how resistant it is to disease. Environment are outside impacts like droughts. Let me know if that helps or if you need more information to finish sorting

Describe how fossil fuels are converted into usable energy
:)

Answers

Answer:

Fossil fuel power plants burn coal or oil to create heat which is in turn used to generate steam to drive turbines which generate electricity.

Explanation:

Fossil fuels are used in power plants to make steam. Steam drives turbines which coupled to generator produce electrical energy. Electrical power is used in all industries, domestic used where energy is needed.

petroleum products like oil, gas are used in motor vehicles, ships, airplanes. They burn and give the power for transport.

Fossil fuels are burned under different conditions in engines, boilers, etc which produce heat energy and then converted into mechanical energy.

gas and oil are used to heat homes.

Answer: HEY HAVE A GREAT DAY

fossil fuels are converted into usable energy by first collecting, and then I'm pretty sure its turned into gas and turns turbines.

Explanation:

Fossil fuel are energy buried within the earth that could used as energy source for consumption. Most sources of earth's energy comes from fossil fuels

I DId this in class and asked on brianly

PLS MARK ME BRAINLIEST

If three different samples of a liquid have different compositions, then the liquid can be classified as *

A.) an element
B.) a mixture
C.) a substance
D.) a compound

Answers

B is correct. A mixture

According to the forces of attraction, if three different samples of a liquid have different compositions, then the liquid can be classified as a mixture.

What are forces of attraction?

Forces of attraction  is a force by which atoms in a molecule  combine. it is basically an attractive force in nature.  It can act between an ion  and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart . The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

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how are thing measured using the metric system

Answers

Answer: The metric system is a system of measurement that uses the meter, liter, and gram as base units of length (distance), capacity (volume), and weight (mass) respectively. To measure smaller or larger quantities, we use units derived from the metric units.

The metric system is a system of measurement that uses the meter, liter, and gram as base units of length (distance), capacity (volume), and weight (mass) respectively. To measure smaller or larger quantities, we use units derived from the metric units.

What is the charge on the Cr in Cr2O72-

Answers

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

In the dichromate ion, the oxidation number of chromium is+6. The sum of the oxidation numbers in Cr2O72-, a polyatomic ion, is -2, the charge of the ion.

What is NOT true about genes and chromosomes?

Genese are located on chromosomes

Chromosomes are in the nucleus

A single chromosome can contain hundreds of genes

All of these are true

Answers

Let us go option by option :

1) Genes are located in chromosomes. TRUE

Chromosomes are in cell nucleus. A chromosome contains hundreds and thousands of genes. A normal have 23 pairs of chromosomes, and a total of 46.

2) Chromosomes are the in nucleus.

TRUE

Chromosome is structure found in nucleus of the cell. It is made up of protein and DNA.

3) A single Chromosome can contain hundreds of genes.

TRUE

single Chromosome can contain hundreds of tgenes.

4) All of the above

TRUE

As all the statements above are true. The correct option is 4.

Answer:

all of them are true

Explanation:

this is because chromosomes contain genetic materials and it is present in the nucleus.
Therefore, the correct option is 4) all of these are true

no problem

Please help, I don't get what does this means

3. Name the compound sodium makes with the following elements.
(a) Calcium carbonate: ​

Answers

Answer: hydrogen-carbonate.

Explanation:Because when carbon dioxide is passed in excess it leads to a formation of hydrogen-carbonate.

I hope everyone finds this helpful

the reaction of sodium and calcium carbonate gives sodium carbonate

there's no science in the pick a subject, so i chose chemistry. NEED HELP ASAP

there's no science in the pick a subject, so i chose chemistry. NEED HELP ASAP
there's no science in the pick a subject, so i chose chemistry. NEED HELP ASAP

Answers

Answer:Trade winds blowing in a curved manner

Explanation:Because i like the answer

polar westerlies that curve cause the poles are cooler

What elements make up brass alloys?

Answers

Answer:

Brass alloy is a composition of elements that define the structural properties It typically is composed of 66% copper and 34% zincI do exams and quizzes if your interested :)
Um I’m trying to get points sorry I can’t answer:(

This kingfisher's beak can be measured about 4.2 cm long. Which two terms describe this type of data?
A. Discrete
B. Continuous
C. Quantitative
D. Qualitative

Answers

Quantitative and Discrete I THINK
I think d because it’s useful info

1. Using D10W and a vial of NaCl 4 mEq/mL, how many mL of NaCl are needed to prepare 250 mL of a
D10/NS solution?
a. 4.8mL
b. 9.6ml
c. 19.6mL
d. 154mL

Answers

To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.

the correct answer is A 4.8 mL

Which type of front is occurring at Point A on the map?



a
Cold Front
b
Warm Front
c
Stationary Front
d
Occluded Front

Which type of front is occurring at Point A on the map? aCold Front bWarm Front cStationary Front dOccluded

Answers

Your answer would be A, a cold front

(Hope this is helpful)

Answer: THE ANSWER IS A ) Cold Front.

Explanation: I GOT A 100 ON THE TEST

Which of the following is the overall goal of all territorial behavior?
Responses

A. to maintain access to a particular type of environment


B. to impress mates in order to reproduce


c. to gain resources to increase success


d. to defend food sources for personal use

Answers

Think of the word territorial to an animal try to protect its family our try to get resources. What are they going to do to get all of this?
The correct answer is (d)
To defend food sources for personal use

Have a good day Brainlist pls

You are to write a poem or song about the planets and the information you submit have to be true about each planet.

Answers

someone added the answer already hope that helps you out

Answer:

our solar system includes the sun and all the planets moons dwarf planets and asteroids that orbit around it the four planets closest to the sun include mercury venus earth and mars these inner planets are made of rock and metals they are quite small compared to the outer planets the four outer planets are called gas giants because they are made mostly of gases the outer planets include jupiter saturn uranus and neptune the most well-known dwarf planet in our solar system is Pluto

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