Unit 3 Test Review

This model of the atom is a solid, indestructible sphere supported by Democritus and Dalton.

• A
• B
• C
• D
• E

Tags

NGSS.MS-PS1-1

This model of the atom is the most current model. It shows the location of the nucleus and electron cloud.

• A
• B
• C
• D
• E

Tags

NGSS.MS-PS1-1

Which of the following subatomic particles does not affect the mass of the atom? Select all that apply.

• Electron
• Proton
• Neutron
• Deuterium

What is the name of the electrons that are found in the outermost energy level?

• Atomic Electrons
• Valence Electrons
• Orbital Electrons
• Jimmy Electrons

A proton has a charge of...

• +1
• -1
• 0
• +5

A cation is a...

• negatively charged ion
• positively charged ion
• neutrally charged ion
• same element but with different mass

What happens if we change the number of protons in an atom?

• it stays the same element but becomes a cation
• it stays the same element but becomes an anion
• it becomes an isotope
• it becomes a different element

What is true about a neutral atom?

• there are more protons than electrons
• there are more electrons than protons
• there is an equal number of protons and neutrons
• there is an equal number of protons and electrons

What is the mass number of an element with 47 protons and 42 neutrons?

• 5

• 47

• 89

• 42

If an atom has a mass number of 122 and an atomic number of 60, how many neutrons are in its nucleus?

• 122

• 62

• 60

• 59