Atoms and Molecules #2

What is the smallest unit of matter?

• Proton

• Neutron

• Electron

• Atom

Which subatomic particle has a positive charge?

• Proton

• Neutron

• Electron

• Atom

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Atom

Where are protons and neutrons found in an atom?

• Orbiting the nucleus

• Inside the nucleus

• Between electrons

• Outside the atom

What is a molecule made up of?

• Protons

• Neutrons

• Electrons

• Atoms

Tags

NGSS.MS-PS1-1

Which of the following is an example of a molecule made of the same elements?

• Oxygen (O)

• Water (H2O)

• Sodium chloride (NaCl)

• Nitrogen (N2)

Tags

NGSS.MS-PS1-1

Acetone (CH₃) is made of 1 ___________ atom and _____ hydrogen atoms.

• carbon, 3

• hydrogen, 1

• carbon, 2

• hydrogen, 3 carbon

Tags

NGSS.MS-PS1-1

Can atoms be broken down into smaller pieces that are still that substance?

• Yes

• No

• Sometimes

• Depends on the atom

Tags

NGSS.MS-PS1-5

How can molecules be broken down into individual atoms?

• By heating them

• By freezing them

• By chemical reactions

• By physical force

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which of the following is an example of an atom?

• Water (H2O)

• Sodium chloride (NaCl)

• Nitrogen (N2)

• Oxygen (O)