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Grade 7 CH 3

Matter and It's Changes

QuestionAnswer
The temperature at which a substance in the liquid state becomes a gas. BOILING POINT
A change in the identity of a substance due to the chemical properties of that substance. CHEMICAL CHANGE
Any characteristic that gives a substance the ability to undergo a change that results in a new substance. CHEMICAL PROPERTY
The amount of mass a material has in a given volume. Mass divided by volume. DENSITY
A fluid (such as air) that has neither independent shape nor volume but tends to expand indefinitely. GAS
A high temperature column of plasma associated with storms. LIGHTNING
A substance that flows freely but is of constant volume. LIQUID
Anything that has mass and takes up space. MATTER
The temperature at which a solid becomes a liquid. MELTING POINT
The physical properties of a substance change, but the identity of the substance does not change. PHYSICAL CHANGE
Characteristic of a material that can be observed or measured without changing the identity of the material. PHYSICAL PROPERTY
A state of matter that is similar to gas, but the atomic particles are charged rather than neutral. PLASMA
The molecules in a solid are closely packed together and contain the least amount of kinetic energy.  SOLID
Solid, liquid, gas and plasma STATES OF MATTER
Mass cannot be created nor destroyed. THE LAW OF CONSERVATION OF MASS
Created by: Bridgerdon
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