Materials : Properties and Changes

When oxygen reacts with glucose, it will produce carbon dioxide and water. What are the reactants of the reaction?

Metal rusting is reversible or irreversible?

The process when all the particles in the liquid have enough energy to become a gas is .....

What is thermal conductor?

Liquids change to gases when they boil and evaporate. True or false?

When something changes and it can turn back. we call it .............. change.

Something about substance that allows us to tell it apart from other substances is .....

Mention two factors that affect rate of dissolving.

Metals are conductor. True or flase?

The process when particles on the surface of a liquid change into a gas is called .....

Anton making 2 glasses of sweet tea but he uses different temperature of water. In the first glass, the water is 40 degree C. In the second glass the water is hotter. In which glass will the sugar dissolve faster?

Dissolving is reversible or irreversible?

Gases have true properties : take up space and have mass. True or false?

Ms Yaya uses vinegar and baking soda to make bubbles (carbon dioxide). What are the reactant in the reaction?

Ms Yaya uses vinegar and baking soda to make bubbles (carbon dioxide). What is the evidence of that chemical reaction?

Ms Yaya uses vinegar and baking soda to make bubbles (carbon dioxide). What is the product in the reaction?

Evaporation can occur at any temperature, but most liquids boil when they are .....

We can't feel air unless it is .....

Temperature at which particles throught a liquid have enough energy to change to a gas is .....

Plastic, wood, and paper are conductor. True or false?