Yr 10 Term 1 round up

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

• YES

• NO

What is the Law of Conservation of Mass?

• It states that matter cannot be created or destroyed.

• It states that energy cannot be created or destroyed.

• It states that matter can be created or destroyed.

• It states that sound can be created or destroyed.

What is the left part of a chemical equation called?
2H_{2 +} O₂ --> 2H₂O

• Reactants
• Products 
• Yields 
• Chemical Equation 

How many atoms of carbon (C) are in C₆H₁₂O₆?

• 3
• 6
• 12
• 24

How many Aluminum are in Al₂O₃?

• 3
• 2
• 5

Element or compound?
H₂O

• Element
• Compound

When a new substance forms as a result of a chemical reaction, what type of change has occurred?

• Chemical Change

• Physical Change

Which of the following models best demonstrates a balanced chemical equation?

• F
• G
• H
• J

Complete the general equation:

Metal + Acid ->

• Salt + Water

• Salt + Hydrogen

• Salt

Complete the equation:

Sodium + Hydrochloric Acid ->

• Sodium Hydroxide + Hydrogen

• Sodium Chloride + Hydrogen

• Chloric Sodium + Hydrogen

• Sodium Chloride + Water