_________________ measures the amount of matter in a substance or an object.

The basic SI unit for mass is the .

_________________ measures the amount of space that a substance or an object takes up.

The basic SI unit for volume is the

_________________ of matter are properties that can be measured or observed without matter changing to an entirely different substance.

Examples of the _________________ of matter include melting point, color, hardness, state of matter, odor, and boiling point.

_________________ is an important physical property of matter. It reflects how closely packed the particles of matter are.

The density of matter can be calculated by dividing its 1)_________________ by its 2)_________________ .

_________________ of matter are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust.

_________________ is the ability of matter to react chemically with other substances.

_________________ is the ability of matter to burn.

A 1)_________________ in matter is a change in one or more of matter’s 2)_________________ properties. During this, matter may change its size, shape, or state, but its 3)_________________ do not change.

Because the chemical properties of matter remain the same in a physical change, a _________________ is often easy to reverse.

A _________________ occurs whenever matter changes into an entirely different substance with different chemical properties. Burning is an example.

Signs of _________________ include the release of bubbles, a change of color, production of an odor, release of heat and light, and production of loud sounds.

Because _________________ result in different substances, they often cannot be undone. Some can be reversed, but only by another [same answer as in the blank].

Burning and other changes in matter do not 1)_________________ matter. The 2)_________________ of matter is always the same before and after the changes occur.

The _________________ of mass states that matter cannot be created or destroyed.

States of matter are different phases in which any given type of matter can exist. There are four well-known states of matter—solid, liquid, gas, and plasma—but only _________________ are common on Earth.

_________________ have a fixed volume and a fixed shape.

_________________ have a fixed volume but take the shape of their container.

_________________ take both the volume and the shape of their container.

A 1)_________________ occurs whenever matter changes from one state to another. They are physical changes in matter. They are reversible changes that do not change matter’s 2)_________________.

_________________ is always involved in changes of state. Particles of matter either absorb or lose [answer] when matter changes from one state to another.

1) is _________________

2) is _________________

3) is _________________

4) is _________________

5) is _________________

6) is _________________