Chemistry/Chemical Reactions & Per Table

How many atoms of chlorine are in Sn(ClO₃)₂?

• 1
• 2
• 3
• 6

How many total atoms are in Sn(ClO₃)₂?

• 1
• 3
• 6
• 9

Which type of evidence of a chemical reaction is best shown in the picture?

• Production of precipitate
• Production of gas
• Color change of a liquid
• Temperature change

Which type of evidence of a chemical reaction is best shown in the picture?

• Production of precipitate
• Production of gas
• Color change of a liquid
• Temperature change

Which would best be evidence a chemical reaction happened?

• The chemical you put in the refrigerator got colder 
• The two liquids you combined formed a solid
• The water you put in the freezer formed a solid
• The water you added green food coloring to turned green.

Which one of these is a physical change?

• Ice melting
• Precipitate forming
• Burning a match
• Unexpected change in temperature

Which describes a chemical reaction?

• A new substance is produced with different physical properties
• The same substances are present with different physical properties

True or False: The products of a chemical reaction have the SAME physical properties as the reactants

• True
• False

What is the coefficient in the following: 3Cl₂

• 3
• 2
• 6
• 1

How many atoms are in the products of this equation?

• 1
• 2
• 3
• 4