Chemical formulas and equations quiz

Which is the correct formula for the compound Chromium (II) Nitrate?

• Cr₂NO₃
• (Cr)₂NO₃
• CrNO₂
• Cr(NO₃)₂

What is the correct ratio of coefficients to balance this chemical equation?

• 1:2:3
• 1:2:1:5
• 2:4:3
• 1:1:2

Tags

NGSS.HS-PS1-7

What is the name of the compound with the chemical formula CrCl₃?

• chromium tetrachloride
• chromium trichloride
• chromium (II) chloride
• chromium (III) chloride

Aluminum (Al) has three electrons in its outer shell.  Oxygen (O) needs two electrons to complete its outer shell.  What is the chemical formula for aluminum oxide?

• AlO
• AlO₂
• Al₂O
• Al₂O₃

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The substances at the beginning of a chemical equation are called the ____

• product
• yield
• chemical symbol
• reactants

Tags

NGSS.MS-PS1-5

In a chemical reaction, everything to the right of the arrow is called ______________.

• Products
• Yields
• Molecules
• Reactants

Translate the word equation below.

Aluminum and Hydrochloric Acid (HCl) react to form Aluminum Chloride and Hydrogen

The numbers needed to balance the equation are:

• 1, 1, 1, 2
• 1, 1, 2, 2
• 1, 1, 1, 1
• 2, 3, 1, 3

Tags

NGSS.HS-PS1-7

The numbers needed to balance the equation are:

• 2, 7, 6, 4
• 2, 1, 3, 2
• 1, 1, 3, 2
• 2, 3, 1, 3

Tags

NGSS.HS-PS1-7

What is the total number of atoms present in 5Na₃PO₄?

• 5

• 40

• 55

• 8

Tags

NGSS.MS-PS1-1