Chemical Reaction Unit Review

A substance that results from a chemical change

• Product

• Reactant

• Law of Conservation of Mass

• Chemical reaction

Sodium and chlorine react to form sodium chloride. Sodium and chlorine are examples of

• Reactants

• Products

• Exothermic reactions

• Precipitates

Tags

NGSS.MS-PS1-5

A __________ involves a change in state, like melting, freezing, or boiling.

• Chemical reaction

• Physical change

• Exothermic reaction

• Endothermic reaction

Tags

NGSS.MS-PS1-4

The substances at the beginning of a chemical equation are called the ____

• product
• yield
• chemical symbol
• reactants

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

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

Tags

NGSS.MS-PS1-2

In a chemical reaction, everything to the right of the arrow is called ______________.

• Products
• Yields
• Molecules
• Reactants

A teacher is demonstrating physical and chemical changes to her class. Which action should she use to demonstrate a chemical change?

• cutting a piece of paper
• folding a piece of paper
• tearing a piece of paper
• burning a piece of paper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Digesting your food is an example of 

• chemical change
• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many Sodium (Na) are in 6NaCl?

• 1
• 12
• 6

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

• 3
• 6
• 12
• 24

Tags

NGSS.MS-PS1-1