The Atom

True or False? Neutrons have a negative charge

• True
• False

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

• nucleus 
• electron cloud
• core 
• center 

Tags

NGSS.MS-PS1-1

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

Tags

NGSS.MS-PS1-1

all matter is made of what 

• energy 
• atoms 
• electrons 
• compounds 

Tags

NGSS.MS-PS1-1

The positively charged particles of an atom are the ________.

• electrons
• protons
• neutrons
• protons & neutrons

Tags

NGSS.MS-PS1-1

The negatively charged particles of an atom are the ______.

• electrons
• protons
• neutrons
• protons & neutrons

Tags

NGSS.MS-PS1-1

What number indicates an electron?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS2-3

What number indicates the nucleus?

• 1
• 2
• 3
• 4

Oxygen’s atomic number is 8. This means that an oxygen atom must have

• 8 electrons
• 8 protons
• 8 neutrons
• a mass number of 8

Tags

NGSS.MS-PS1-1

Atoms are mostly made up

• of air

• of empty space

• filled with electrons

• the nucleus

Tags

NGSS.MS-PS1-1