Mod J, U3, L1

What indicates a chemical reaction has happened?

• A change of state happens.

• A new substance is created

• Sugar dissolves into water.

• A paper is ripped in half

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which would indicate a chemical reaction may have occurred?

• A odor produced when two substances are mixed.

• Energy is released through heat

• A substance changes state

• An antacid dissolves in water creating bubbles

Tags

NGSS.MS-PS1-2

What is a precipitate?

• When salt is dissolved into water.

• When a solid forms when a liquid is added to a solution

• An odor forms when burning a sugar cube

• Rain falls

What is a reactant?

• The substance(s) before a chemical reaction

• The substance(s) after a chemical reaction

• The substance(s) after a physical change

• The substance(s) before a physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is a product?

• The substance(s) before a chemical reaction

• The substance(s) after a chemical reaction

• The substance(s) after a physical change

• The substance(s) before a physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What happens to the atoms when a chemical reaction occurs?

• The atoms of the reactants rearrange to produce a product

• The atoms of the products rearrange to produce a reactants

• Atoms are destroyed from the reactants.

• Atoms are added to the products.

Tags

NGSS.MS-PS1-5

What chemical reaction occurs when making cookies?

• Mixing the ingredients to make a batter.

• The baking soda in the batter creates releases a gas.

• Cooking the eggs causing a chemical change.

• No chemical reaction happens.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Which observation may indicate a chemical reaction has happened?

• An odor is produced

• Energy is released as light or heat

• A change of state occurs.

• A formation of a precipitate

• Bubbles appear showing a gas was produced

Tags

NGSS.MS-PS1-2

Which observation indicate a chemical reaction has happened?

• An odor is produced

• Energy is released as light or heat

• A change of state occurs.

• A formation of a precipitate

• Bubbles appear showing a gas was produced

Tags

NGSS.MS-PS1-2

What is a chemical reaction?

• The process in which the building blocks of matter are rearranged to produce a different substance

• When a substance changes to a chemical

• When a substance changes states of matter.

• When a substances reacts with chemicals.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5