Chemistry Practice

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

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

What is the atomic number of this nucleus?

• 1
• 3
• 4
• 7

Tags

NGSS.HS-PS1-8

What is the mass number of this nucleus?

• 1
• 3
• 4
• 7

Tags

NGSS.HS-PS1-8

CALCIUM

• C
• Ca
• Cu
• Cl

The element that occurs in highest percentage in the crust is

• Calcium
• Oxygen
• Iron
• Potassium

Elements are represented by chemical symbol.  Symbols are written with

• all lower case letters
• all capital letters
• always only one  letter
• At least and ONLY one capital letter

• 2
• 8
• 3
• 13

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• 4
• 6
• 8
• 10

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What is the atomic number for Lithium?

• 3
• 6.941
• 3.941
• 9.941

Tags

NGSS.HS-PS1-1