Atoms, Isotopes, and Atomic mass

What is atomic number?

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

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

The _________ of an element equals the number of protons in an atom of that element.

• mass number

• atomic weight

• atomic number

• isotopes

How many neutrons does this isotope of lithium have?

• 3

• 4

• 8

• 5

Tags

NGSS.MS-PS1-1

How many neutrons are in carbon-14?

• 8

• 14

• 7

• 6

What is the mass number for iron?

• 26

• 55

• 55.847

• 56

What is the atomic mass of sulfur?

• 16

• 32

• 32.07

• Mr. Lupo has never taught me this.