Science 9 Chemistry Topics 7/8

When two or more substances undergo a rearrangement of their atoms to form new substances.

• Chemical Change

• Physical Change

• Combustion

• Corrosion

the starting materials in a chemical reaction

• Products
• Reactants
• Starters
• Enders

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

• Yields
• Reactants
• Products
• Precipitates

The process by which one or more substances change to produce one or more different substances

• Chemical Process

• Reactant

• Chemical Reaction

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

• Mg and O
• MgO
• Mg and MgO
• O and MgO

• 1

• 6

• 2

Determined whether the following equation is balanced or unbalanced. Ag + O_{2 --->} 2Ag₂O

• Balanced

• Unbalanced

Determine whether the following equations is balanced or unbalanced. H₄ + O₂ ---> 2H₂O

• Balanced

• Unbalanced

Determine whether the following equation is balanced or unbalanced. 2Fe + 3Cl₂ ---> FeCl₃

• Balanced

• Unbalanced

In order for an equation to be balanced, there must be ...

• an equal amount of atoms on both sides

• a greater mass on the product side

• a greater mass on the reactant side

• elements with the same atomic # on both sides