This is the smallest unit of matter that makes up EVERYTHING
What is an atom?
This organism makes its own food using sunlight.
What is a producer?
This type of consumer is an herbivore, it eats producers.
What is a primary consumer?

This type of consumer eats herbivores
What is a secondary consumer?
If an ecosystem loses all of its producers, this organism would be affected first.
What are primary consumers?
This type of change creates a new substance.
What is a chemical reaction?
This is the source of all energy in a food web.
What is the sun?

This word refers to the different kinds of atoms.
What are elements?

In the chemical formula CH₄, this element has 4 atoms.
What is Hydrogen?
Melting ice is this type of change.
What is a physical change?
Burning wood is an example of this type of reaction.
What is an exothermic reaction?
Arrows in a food web show this moving from one organism to another.
What is energy?
This term describes an animal with no predators.
What is an apex predator?
Plants use this gas from the air during photosynthesis.
What is carbon dioxide?

This is a substance made of 2 or more elements bonded together.
What is a compound?
CO₂ contains this many oxygen atoms.
What is 2?

Give an example of an organism that is in more than 1 trophic level.
Ex: omnivores like orangutans and humans. They are both primary consumers and secondary consumers.
This type of reaction releases heat energy into the surroundings.
What is an exothermic reaction?

In the formula 2H₂O, this number tells how many water molecules there are.
What is the coefficient?

In the formula 3CO₂, this is the total number of oxygen atoms present.
What is 6?
In photosynthesis, plants turn the sun's energy into this type of energy.
What is chemical energy?
This amount of energy moves from one trophic level to the next.
What is 10%?

The formula for photosynthesis is:
This side of the equation contains the reactants.
What is the left side?
If a reaction causes the temperature around it to drop, it is most likely this type of reaction.
What is an endothermic reaction?
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This is the number of O2 molecules in the balanced equation for photosynthesis.
What is 6?
