IC2 Chemical Equations

A chemical reaction occurs when a student puts carbon dioxide (CO2) and water (H2O) together.

CO2 + H2O → ?

Which of the following could be produced by this reaction?

• H2O2 + CO2

• H2CO3

• H3CO2

• H2O + CO2

Tags

NGSS.MS-PS1-2

What is missing from these equations?

methane= +_______-----> carbon dioxide + water

magnesium+ ______ ----> magnesium oxide

iron+ ________ ---->iron oxide

• carbon dioxide

• oxygen

• olsinium

• pudding

Tags

NGSS.MS-PS1-5

What best explains why electrolysis is a chemical reaction?

• Electrolysis is a chemical reaction because it makes two new substances identical to water.

• Electrolysis rearranges the atoms of water into two new substances with different properties than water.

• Electrolysis is a chemical reaction because it turns two old substances (hydrogen and oxygen) into pure water.

• Electrolysis boils water until the water vapor turns into new susbtances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

True or false: electrolysis is a CHEMICAL reaction

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is the compound in the pink box a Reactant or a Product?

• Reactant

• Product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In a chemical equation...

• a new substance is formed

• new atoms are formed

• old atoms disappear

• a equal sign is always used

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When writing a chemical equation, reactants are on the _____________ while products are on the _________________.

• top, bottom

• right, left

• left, right

• bottom, top

The amount of atoms on each side of a chemical equation are

• different

• the same

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many Potassium (K) atom are there?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

How many Hydrogen (H) and how many Chlorine (Cl) are there?

• H = 4, Cl = 1

• H = 4, Cl = 0

• H = 4, Cl = 3

• H = 4, Cl = 4

Tags

NGSS.MS-PS1-1