why substance change TCI 5th Grade

Heating matter can cause the properties of matter to change because you are

• Adding Energy

• removing Energy

• Mixing a substance

When you cool a filled balloon in the freezer, it will ________.

Why does bending a glow stick cause it to glow?

• It heats two liquids.

• It causes a reaction between two liquids.

• It dissolves the liquid

By the end of the lesson, you will be able to explain the phenomenon: Bubbles form when the baking soda in the flask comes into contact with vinegar. Why?

Answer explanation

The reaction of two substances cause a chemical reaction.

What would NOT happen when food spoils?

• The particles would slow down.

• The food would smell

• The food would change color

What can cause the properties of matter to change?

• All of the above

• adding energy

• removing energy

• mixing substances

A substance when you cool it.​ ​ ​ (a)  

• usually contracts

• never contracts

• usually expands

• never expands

Dissolving substances together causes

• properties to change but no reaction to occur.

• no properties to change but a reaction to occur.

• properties to change and a reaction to occur.

Answer explanation

Not a chemical reaction. No new substance is being made.

Why are other metals, like copper, dissolved in gold?

• To make the gold to become weaker

• To make the gold look shinner

• To make gold stronger

• None of the above

Mixing the liquids in a glow stick causes

• the liquids to cool down.

• the liquids to dissolve.

• energy to be stored.

• energy to be released.