7th Grade Physical and Chemical Change

Matter is neither created nor destroyed.

• True

• False

Water can only become gas when it is boiled.

• True

• False

Water can become gas when it is boiled. It can also evaporate at room temperature or even when it is cold outside.

• True

• False

Freezing only happens when it is cold.

• True

• False

Matter freezes (or becomes a solid) at different temperatures. For example, glue and wax freeze at room temperature. Water freezes at 0 degrees celsius.

• True

• False

Matter cannot be created nor destroyed. Matter can only be changed.

• True

• False

What is matter?

• Matter is anything that has mass and takes up space.

• Matter is anything that does not have mass and does not take up space.

Matter is made of atoms

• True

• False

"Conservation of Matter" means that energy and matter can never be created nor destroyed. They can only be changed.

• True

• False

What does it mean that an object is "the sum of its parts?"

• ALL of the parts added together equal the object.

• NONE of the parts added together equal the object.