Masses of Atoms

Oxygen has a mass of 16 and has 8 protons. How many neutrons does oxygen have?

Calcium has an atomic mass of 40 and an atomic number of 20. How many neutrons does it have?

What does the 1.00794 stand for?

• Hydrogen

• atomic number

• atomic mass

• atomic explosion

Tags

NGSS.MS-PS1-1

What is the atomic mass of "F"

• 9

• 18

• 18.99

What is the mass number of this nucleus?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What is the mass number?

• the number of protons

• the number of protons and neutrons

• the number of neutrons

• the number of protons and electrons

Two atoms of the same element but with different mass numbers are called________

• electrons

• isotopes

• variables

• electron cloud

Isotopes are different from regular atoms because they have a different

• Mass

• Color

• Charge

What mass does a neutron have?

• 1

• 0

• -1

• +2

The symbol for Carbon is

• 6

• 12.011

• C

• Ca

Tags

NGSS.MS-PS1-1