Yr 10 Chemistry revision

A calcium atom (atomic number 20) will have an electron configuration:

• 2,10, 8
• 2,2,2,2,2,2,2,2,2,2, 2
• 2, 8, 10
• 2, 8, 8, 2

• 2
• 8
• 3
• 13

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• 7
• 8
• 9
• 10

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• 2
• 3
• 4
• 5

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

the central region of an atom where its neutrons and protons are is its 

• nucleus 
• electron cloud
• core 
• center 

Tags

NGSS.HS-PS1-8

Particles in an atom that are neutral and have no charge are 

• negatrons 
• electrons 
• neutrons 
• protons 

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

What does the 1.00794 stand for?

• Hydrogen
• atomic number
• atomic mass
• atomic explosion

Tags

NGSS.HS-PS1-1

• Periods
• Groups