Counting Subatomic Particles

What property determines if an atom is identified as Chlorine?

• it has 18 neutrons

• it has an atomic mass of 35

• it has 17 protons

• Its element symbol is Cl

Tags

NGSS.MS-PS1-1

How many protons are in a Chlorine atom?

• 17

• 35

• 35.45

• 18

Tags

NGSS.MS-PS1-1

How many electrons are in a Chlorine atom?

• 17

• 35

• 35.45

• 18

Tags

NGSS.MS-PS1-1

How many neutrons are in an average Chlorine atom?

• 17

• 35

• 35.45

• 18

Tags

NGSS.MS-PS1-1

What is the atomic mass of Neon?

• 10
• 20.18
• 10.18
• 30.18

Tags

NGSS.HS-PS1-1

How many electrons does a Copper atom have?

• 63

• 29

• 92

• 34

Tags

NGSS.MS-PS1-1

How many neutrons does a Hydrogen atom have?

• 1

• 2

• 3

• 0

How many protons are in a phosphorus atom?

• 15

• 16

• 31

• 46

Tags

NGSS.MS-PS1-1

The nucleus of an atom contains which subatomic particles?

• protons and electrons

• protons and neutrons

• electrons and neutrons

• protons, electrons, and neutrons

Tags

NGSS.MS-PS1-1

The atomic number is equal to _.

• the number of protons and electrons
• the number of neutrons only
• the total number of protons and neutrons
• the number of protons neutrons and electrons