Lesson 1 Lesson 2 Lesson 3
100
Anything that has mass and takes up space
What is matter?
100
A characteristic of matter that you can observe or measure without changing the identity of the matter
What is a physical property?
100
A change in size, shape, form, or state of matter in which the matter's identity stays the same
What is a physical change?
100
A characteristic of matter that can be observed as it changes to a different type of matter
What is a chemical property?
200
A small particle that is a building block of matter
What is an atom?
200
The amount of matter in an object
What is mass?
200
The particles in the solid move faster and faster, and the temperature increases
What happens when thermal energy is added to a solid?
200
A change in matter in which the substances that make up the matter change into other substances with new physical and chemical properties
What is chemical change?
300
Matter with a composition that is always the same
What is a substance?
300
The mass per unit volume of a substance
What is density?
300
Particles in the gas move more slowly and the temperature decreases
What happens when thermal energy is removed from a gas?
300
Signs of chemical changes include the formation of bubbles or a change in energy, odor, or color
How do you know when a chemical change occurs?
400
A substance that consists of just one type of atom
What is an element?
400
The ability of one substance to dissolve in another
What is solubility?
400
The physical properties of matter change
What happens during a physical change?
400
Write a chemical equation
What is useful way to understand what happens during a chemical reaction?
500
A type of substance containing atoms of two or more different elements chemically bonded together
What is a compound?
500
Another property that is independent of the sample size
What is conductivity?
500
When the particles are moving slowly enough for attractive forces to pull the particles close together
When does condensation occur?
500
Change the chemical formula of any reactants or products
When balancing an equation, you cannot do what?






Chapter 7 Science

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