Unit 1 Review

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

• neutron

• proton

• electron

• electron cloud

What is atomic number?

• Number of protons in an atoms 
• Number of neutrons in an atom
• Mass of an atom
• Charge on an atom

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Neutrons and Electrons
• Protons, Neutrons and Electrons

Tags

NGSS.MS-PS1-1

What electrical charge does a proton have?

• +1
• 0
• -1
• +2

What mass does a neutron have?

• 1 amu

• 0 amu

• -1 amu

• +2 amu

The total number of protons and neutrons in an atom is called the...

• Atomic number
• Proton number
• Mass number
• Weight number

Tags

NGSS.HS-PS1-8

How many protons does an aluminum atom have?

• 27

• 14

• 40

• 13

How many electrons does a sodium atom have?

• 23

• 11

• 12

• 34

Tags

NGSS.MS-PS1-1

Atoms of the same element must always have the same number of _________

• electrons
• neutrons
• isotopes
• protons

What element has 9 protons, 9 electrons, and 10 neutrons?

• nitrogen

• oxygen

• fluorine

• neon

Tags

NGSS.MS-PS1-1