Science L4 Review Of Term 1

Mass is neither _________ or _______ in chemical reactions.

• created , destroyed

• formed, released

• increased , improved

Chemical reactions can be seen in everyday life.

• True

• False

Chemical reactions will ____________ the molecular structure of an element.

• rearrange

• add to

• remove from

Chemical change is observed when there is a ________ change.

• color change

• size change

• weight change

In this chemical reaction, what are the reactants?

• Hydrogen and oxygen

• Water

• Hydrogen and water

• Oxygen and water

In this chemical reaction, what are the products?

• methane and oxygen

• Carbon dioxide and water

• Methane and carbon dioxide

• Oxygen and water

When the sun shines on a plant, especially the leaves, there is a reaction that occurs. What is it ?

• Respiration

• Photosynthesis

• Chemical Synthesis

What can we say about this chemical reaction for photosynthesis?

• Carbon dioxide is taken from the air and changed into oxygen for us to breath

• Carbon dioxide is a reactant and will disappear in the chemical reaction

• Oxygen is a byproduct of this chemical reaction and is not important

At night photosynthesis continues ny moonlight.

• True

• False

In this food chain, which is the producer?

• Grass

• Grasshopper

• Mouse

• Owl