Chemistry U3 L1: Chemical reaction

Adam made pancakes from batter, freshly squeezed orange juice, fried eggs, and a strawberry fruit salad. Identify whether 'Cracking the eggs and adding them to the batter' is a chemical or physical change.

• Chemical

• Physical

• Neither

• Both

Tags

NGSS.MS-PS1-2

Identify whether 'Frying the eggs over easy (yolk is now harder)' is a chemical or physical change.

• Chemical

• Physical

• Neither

• Both

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A chemical reaction occurs. Which statement is true of the reactants and the products in the reaction?

• The atoms in the products were regrouped into different molecules to form the reactants.

• The atoms in the reactants were regrouped into different molecules to form the products.

• The atoms in the products were destroyed and new molecules appeared to form the reactants.

• The atoms in the reactants were destroyed and new molecules appeared to form the products.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Identify whether 'Squeezed out the carrot juice and filtered out the pulp into a glass' is a chemical or physical change.

• Chemical

• Physical

• Neither

• Both

Tags

NGSS.MS-PS1-2

Identify whether 'Peel the skin off the banana' is a chemical or physical change.

• Chemical

• Physical

• Neither

• Both

Which process is an example of a chemical change?

• Salt mixes with water and dissolves.

• A sugar cube is crushed.

• Water droplets form on the outside of a cold drink glass.

• An antacid tablet is added to water and bubbles (a gas) are produced.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A student observed a precipitate form during a chemical reaction. Which of the following did the student most likely observe?

• Bubbles of gas floated to the top of a solution.

• The color of a liquid changed when a solid was added to it.

• Steam rose from a flask when a powder was added to a liquid.

• A solid sank to the bottom of a container when two liquids were mixed.

Tags

NGSS.MS-PS1-2

Which statement indicates that a chemical reaction has taken place?

• A loud noise is produced by crushing a can.

• A puddle is produced by melting an ice cube.

• An odor is produced by burning a sugar cube.

• A shard of glass is produced by breaking a bottle.

Tags

NGSS.MS-PS1-2

Which property could be used to identify a substance?

• mass (how much matter makes up a substance)

• weight (gravity's affect on an object's mass)

• density (mass/volume ratio)

• volume (amount of space it takes up)

Which of the following is a sign of a chemical reaction?

• Change in shape

• Change in color

• Change in size

• Change in texture

Tags

NGSS.MS-PS1-2