Semester Review Pre- AP 7th

Electrons have a _______ charge

• positive

• negative

• neutral

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

an atom with atomic number 6 would have how many protons 

• 6
• 12
• 3
• cannot be determined 

Tags

NGSS.MS-PS1-1

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

• negatrons 
• electrons 
• neutrons 
• protons 

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

How many electron shells/levels does this atom have?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

Number of electrons in Fluorine (F)

• 9

• 10

• 19

Tags

NGSS.MS-PS1-1

Number of neutrons in antimony (Sb)

• 51

• 71

• 122

Number of protons in strontium (Sr)

• 38

• 50

• 88

How many electrons are in Manganese (Mn) ?

• 12
• 25
• 55
• 30

Tags

NGSS.MS-PS1-1