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