Chemistry NCFE Review

Which of the following is described as the basic unit of matter?

• Element

• Atom

• Molecule

• Compound

In the atom diagram shown, A is pointing to the darker particles, these are known as

• electrons

• protons

• neutrons

• the nucleus

Tags

NGSS.MS-PS1-1

In the atom diagram shown, E is pointing to

• An electron

• a proton

• a neutron

• the nucleus

Tags

NGSS.MS-PS1-1

What charge does an electron have?

• Negative

• Positive

• Neutral

• Contrated

Tags

NGSS.MS-PS1-1

NGSS.MS-PS2-3

What is the atomic mass of this atom?

• 1

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

What information does a subscript number tell us?

• the number of atoms per element

• the number of molecules per formula

Tags

NGSS.MS-PS1-1

What information does the coefficient in an equation give us?

• the number of atoms per element

• the number of molecules per formula

Tags

NGSS.MS-PS1-5

Which formula has 6 atoms of Carbon, 12 atoms of Hydrogen, and 6 atoms of Oxygen.

• 
• 
• 
• 

Tags

NGSS.MS-LS1-6

NGSS.MS-PS1-1

12g of Carbon react with 16g of Oxygen, how much carbon monoxide (CO) is formed? 

• 28 g

• 4g

• 30g

• 12g

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The number of atoms of  N (nitrogen) in 3N₂O₅ is

• 2

• 5

• 6

• 15

Tags

NGSS.MS-PS1-1