Masses of Atoms

What does the 1.00794 stand for?

• Hydrogen

• atomic number

• atomic mass

• atomic explosion

What is the number of protons that the element in this image contain?

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

What is the atomic mass of "F"

• 9

• 18

• 18.99

all matter is made of what 

• energy 

• atoms 

• electrons 

• compounds 

Tags

NGSS.MS-PS1-1

The symbol for Carbon is

• 6

• 12.011

• C

• Ca

Tags

NGSS.MS-PS1-1

The symbol for Carbon is

• 6

• 12.011

• C

• Ca

Beryllium has how many protons?

• 4

• 9.0122

• 2

• 13.0122

Tags

NGSS.MS-PS1-1

What is the atomic number?

• the number of protons

• the number of protons and neutrons

• the number of neutrons

• the number of protons and electrons

Tags

NGSS.HS-PS1-7

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

Tags

NGSS.HS-PS1-8