Biology Section 2A

The physical stuff that makes up everything in the universe is known as

• mass

• elements

• matter

• energy.

Tags

NGSS.MS-PS1-5

Which of the following is not a smaller part of an atom?

• nucleus

• ion

• proton

• electron.

Tags

NGSS.MS-PS1-1

A pure substance made of only one kind of atom is a(n)

• element

• ion

• neutron

• chemical.

Temperature is the measurement of

• the amount of matter in an object.

• how much energy an object has.

• the amount of energy stored in chemicals.

• the speed of moving particles.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A compound held together by opposite electrical charges is a(n) (a)   compound

• covalent

• ionic
• molecular

• electrical.

Which of the following is not a molecule?

• oxygen (O₂)

• gold (Au)

• hydrogen peroxide (H₂O₂)

• DNA

Tags

NGSS.MS-PS1-1

Covalent compounds form when atoms (a)   electrons

• share

• lose

• gain

• exchange

Ionic compounds form when atoms (a)   electrons

• transfer
• share

Chemistry is the study of matter and the changes it experiences.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Electrons are the basic building blocks of matter.

• True

• False

Tags

NGSS.MS-PS2-3