This is a very long thing, Answer any of the questions that you can please anything helps just make sure you put the numbers for the questions you answer:

Question 1: Laws of Conservation of Matter and Energy (2 points)

a. Law of conservation of matter (1 point)

i. What does the law say about matter?

ii. What about matter can change and what does not change, according to the law?

b. Law of conservation of energy (1 point)

i. What does the law say about energy?

ii. What about energy can change and what does not change, according to the law?

Question 2: Phases of Matter (2 points)

a. What are the four states, or phases, of matter? Describe the shape and volume properties of each phase. Can they change, or are they fixed? (1 point)

i. ___________

Shape:

Volume:

ii. _

Shape:

Volume:

iii. _

Shape:

Volume:

iv. _

Shape:

Volume:
b. When heat energy is absorbed by matter, the matter's temperature increases. When heat energy is released by matter, the matter's temperature decreases. The matter can also change from one phase to another when heat energy is absorbed or released. Identify whether matter absorbs heat or releases heat as each of the following phase changes occur. (1 point)

i. From solid to liquid (melting)

ii. From liquid to solid (freezing or hardening)

iii. From liquid to gas (evaporation)

iv. From gas to liquid (condensation)

Question 3: Types of Energy (4 points)

a. List four kinds of energy. Give a brief definition of each. (1 point)

i.

ii.

iii.

iv. __________
b. Energy can change from one form to another. Describe the energy conversions in the following scenes. (1 point)

i. A kid falling out of a tree

ii. A scout rubbing sticks together to start a fire

iii. A man running a kerosene heater

c. What is the equation for calculating gravitational potential energy on the Earth? (1 point)

d. What is the equation for calculating kinetic energy (1 point)

Question

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ardni313 ardni313 · Answer 1 · 2020-10-23T01:29:06+02:00

Matter cannot be created or destroyed.

Conservation of mass applies to a closed system, where the masses before and after the reaction are the same

Or

Conservation of mass means:

In a closed/isolated system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.

So what changes is the form, into a liquid, gas or solid

while what does not change is the mass