Chemical Reactions Quiz

What is the change of state/physical reaction?

• The change of temperature, change in odor, and release of light is the change of state/physical reaction.

• A change from one state (solid, liquid, or gas) to another without a change in chemical composition.

• The number and type of atoms in the reactants equals to the number and type of atoms in the products.

• When matter that contains carbon is burned or used in respiration.

What is the conservation of matter?

• A chemical change that occurs when two or more substances combine to form a new substance.

• When decomposers break down organic matter and released carbon to the soil.

• When nitrates in runoff streams release glucose into the system of the plant in the form of gas.

• The number and type of atoms in the reactants equals the number and type of atoms in the products.

What is a trophic pyramid?

• A graphical representation designed to show the biomass or bio productivity at each trophic level in a given system.

• A pyramid that shows fruits and vegetables on it.

• A graphical representation designed to show food and plants on each level.

• A pyramid that shows what price water bottles are.

What are the indicators of a chemical reaction?

• formation of a precipitate, release of fire, change in odor, release of air, release of gas, formation of condensation.

• change in temperature, formation of a precipitate, release of light, change in odor, change in state, release of a gas.

• formation of a precipitate, release of light, change in temperature, change in nitrogen dioxide, change in alphabetical order, change in color.

• change in temperature, change in color, formation of a precipitate, release of a gas, release of light, change in odor.

chemical change or physical change?

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

chemical change or physical change?

• chemical change

• physical change

chemical change or physical change?

• chemical change

• physical change

chemical change or physical change?

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

chemical change or physical change?

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

chemical change or physical change?

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5