Chemistry3

What are pollen fossils used for?

• To analyze soil composition

• To collect water

• To measure temperature

• To study ancient plants

What is a peat bog?

• A type of gas

• A tool for collecting soil layers

• A type of fossil

• A chemical reaction

What does the atmosphere refer to?

• The layer of gases around Earth

• The surface of the Earth

• The core of the Earth

• The water bodies on Earth

What is the carbon cycle?

• The process of carbon in the environment

• A type of chemical reaction

• A physical change

• A method of fossilization

What is a chemical reaction?

• A physical change in state

• A change in temperature

• A process where substances change into new ones

• A method of collecting data

What is a physical reaction?

• A method of fossil collection

• A type of combustion

• A change in chemical composition

• A change in state of matter

What does a chemical equation show?

• The temperature of a reaction

• A way to show a chemical reaction

• The layers of the Earth

• The types of fossils

What are reactants?

• Substances used in a chemical reaction

• Products of a reaction

• Types of fossils

• Gases in the atmosphere

What are products in a chemical reaction?

• Substances that do not react

• Tools for collecting fossils

• Substances made by a chemical reaction

• Layers of the Earth

What is combustion?

• A chemical equation

• A type of fossil

• A physical change

• Burning that makes heat and light