Lesson 1 pg. 18-20 Vocab

the amount of matter in an object

• weight

• mass

• elements

• inward

large or heavy solid

• massive

• inward

• observe

• weight

to watch something closely

• mass

• element

• observe

• reaction

a response to a feeling or event

• angry

• element

• observe

• reaction

the strength and vitality required for sustained physical or mental activity

• reaction

• energy

• mass

• observe

a part or aspect of something; a substance of matter

• observe

• mass

• element

• reaction

pulling toward the inside

• inward

• outward

• reaction

• elements