Chemical Reactions

What is matter?

• Anything that takes up space and has mass

• All the gases in the universe

• Only Solids

• All living things

Answer explanation

Matter is anything that takes up space and has mass

The arrow in a chemical equation means...

• The reactants

• Yield (reacts)

• The Products

• The type of reaction

Answer explanation

The arrow in a chemical equation means yields or reacts with.

Tags

NGSS.MS-PS1-2

How many atoms of Phosphorus are in 5 P₂O₃

• 2

• 5

• 10

• 3

Answer explanation

5 P₂O₃

_{To find the amount of Phosphorus atoms in the following equation, multiply the coefficient by the subscript beside Phosphorus (P).}

_{5 x 2 = 10}

Tags

NGSS.MS-PS1-1

What are two ways that matter is measured

• Mass in grams

• Length in meters

• Volume in liters

• Radioactivity in rontgens

Answer explanation

Two ways mass is measured;

Mass in grams

Volume in liters

A combustion reaction involves hydrocarbons burning in the presence of oxygen and heat

• True
• False

Answer explanation

Combustion reaction involve hydrocarbons burning in the presence of oxygen and heat

The final material or what you make in a chemical reaction are

• Reactants

• Elements

• Catalysts

• Products

Answer explanation

Products are the final material or what is made during the chemical reaction

Tags

NGSS.HS-PS1-6

What is a chemical reaction?

• Matter being created

• a change in an object or substance

• Matter being destroyed

Answer explanation

A chemical reaction is a change in an object or substance that can't be easily reversed

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Precipitate is

• Rain/snow/sleet

• a solid made in a reaction

• Bubbles in a reaction

• the new substance that is made

Answer explanation

Precipitate is a solid made in a reaction

______are on the left side of the arrow and ______are on the right side of the arrow

• Products, reactants

• Elements, compounds

• Reactants, Products

• Gases, solids

Answer explanation

Reactants are on the left side of the arrow and products are on the right side

A + B → AB is what type of reaction

• Synthesis

• Double replacement

• Combustion

• Decomposition

Answer explanation

A synthesis reaction is when two or more reactants combine to form one product