Chemistry Semester 2 Review

What is the electrical charge of a proton?

• Neutral

• +1

• –1

• +2

What is the electrical charge of a neutron?

• Neutral

• +1

• –1

• +2

What is the electrical charge of an electron?

• Neutral

• +1

• –1

• +2

Which particle contributes least to the mass of an atom?

• Proton

• Electron

• Neutron

• Quark

An atom with 2 protons and 2 neutrons is most likely:

• Helium

• Lithium

• Beryllium

• Hydrogen

Tags

NGSS.MS-PS1-1

Which of the following statements is true about a neutral atom?

• Electrons > Protons

• Protons = Neutrons

• Protons = Electrons

• Neutrons > Protons

Tags

NGSS.HS-PS1-7

How many neutrons does Krypton-84 have?

• 48

• 36

• 84

• 120

Tags

NGSS.HS-PS1-8

What is the atomic number of Krypton?

• 84

• 36

• 48

• 120

Elements in the same group have similar chemical properties.

• True

• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Atomic radius increases as you move down a group.

• True

• False