unit 4 test

How many Magnesium atoms are in 10MgCl₂?

• 10

• 5

• 20

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

How many atoms are there TOTAL in H₂SO₄ ?

• 6

• 5

• 7

• 3

How many Nitrogen atoms are in (NH₄)₂CrO₄?

• 1

• 2

• 8

• 16

How many atoms of Oxygen are in Fe(NO₃)₃ ?

• 6
• 3
• 9
• 1

Number of H in 3(NH₄)₂CrO₄

• 4
• 2
• 8
• 24

2H₂ + O₂ ----> 2H₂O What is the product?

• ------>
• 2H₂O
• 2H₂+ O₂

2H₂ + O₂ --------> 2H₂O What  are the reactants?

• ----->
• 2H₂O
• 2H₂ +O₂

A subscript is the small number below a(n) ________ that tells the number of _______ of that element.

• element symbol; atoms
• atom; element symbol
• subscript; protons
• compound; elements

Is this equation balanced?

• yes
• no
• Not enough information