Chemical Reactions Review

In a chemical equation, the reactants are found on the _____ of the arrow

• right

• left

An ending substance that is made during a chemical reaction

• reactant

• product

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

A starting substance that is part of a chemical reaction

• Reactant

• Product

Tags

NGSS.MS-PS1-5

A process in which atoms rearrange to form new substances

• chemical reaction

• chemical formula

• science

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

The total mass of the reactants is 18.4g. What would the total mass of the products be? (NOTE: Refer to the Law of Conservation of Mass)

• 18.4g

• 9.2g

• 4.6g

• 36.8g

Tags

NGSS.MS-PS1-5

Which of these is NOT a sign a chemical change has occurred?

• color change

• temperature change

• bubble formation

• cutting material

Tags

NGSS.MS-PS1-2

The Law of Conservation of Mass states

• that matter exists in all states and reacts the same

• that matter can only be changed into new substances by introducing a catalyst

• that matter exists in the same state throughout any chemical change

• that matter cannot be created or destroyed

Tags

NGSS.MS-PS1-5

SELECT 2: Which of the following 2 are chemical reactions?

• sugar dissolving in water

• water turning into steam

• burning wood

• mixing baking soda and vinegar

• tearing paper

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Select the pair of words that correctly displays the general FORMAT for writing chemical equations

• products --> reactants

• products --> products

• reactants--> products

• reactants --> reactants

Reactant 1 is 4 grams, reactant 2 is 2 grams. How many total grams is the product?

• 4 grams

• 2 grams

• 6 grams

• 10 grams

Tags

NGSS.MS-PS1-5