Chemical Reactions Make Up Assignment

Multiple Choice

During a reaction, atoms are

• created

• destroyed

• neither created or destroyed - just rearranged

Multiple Choice

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

• F

• G

• H

• J

Multiple Choice

In the equation,          2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O

• MgO

• Mg and MgO

• O and MgO

Multiple Choice

How many total atoms are in this compound? Al₂O₃

• 2

• 5

• 6

• 3

Multiple Choice

How many F atoms are in this compound?

MgF₂

• 2

• 6

• 8

• 12

Multiple Choice

Is a copper penny turning greenish after a few years a chemical or physical change?

• Chemical Change

• Physical Change

Multiple Choice

the starting materials in a chemical reaction are called what?

• Products

• Reactants

• Starters

• Enders

Multiple Choice

a substance that is formed as the result of a chemical reaction is called

• Product

• Reactant

• Starters

• Enders

Multiple Choice

How would you describe this chemical formula?

3O

• 3 Oxygen molecules

• 3 Oxygen atoms

• 3 Oxygen elements

• 3 Oxygen compounds

Multiple Choice

How would you describe this chemical formula?
3 H2O

• 3 H2O molecules

• 3 H2O atoms
  

• 3 H2O elements

• 3 H2O parts

Multiple Choice

A chemical reaction is when...

• Atoms and molecules are destroyed

• Atoms and molecules are created

• Atoms and molecules break apart and regroup to form new products

• Atoms and molecules go on vacation and relax a little

Multiple Choice

Which chemical equation matches the model shown?

• 3C + 4O --> 3CO2

• 3C + 2O2 --> 3CO2

• C3 + 4O --> 3CO6

• C3 + 2O2 --> 3CO6

Multiple Choice

What are the basic building blocks for all matter?

• atoms
• elements
• compounds
• chemicals

Multiple Choice

What is a molecule?

• Two or more atoms bonded together
• One element
• One atom
• Solid, Liquid, Gas

Multiple Choice

The substances listed on the right side of a chemical equation are the

• Yields

• Reactants

• Products

• Precipitates

Multiple Choice

The substances listed on the left side of a chemical equation are the

• Products

• Coefficients

• Precipitates

• Reactants