Answer:
c - Heterogeneous and Homogeneous
Explanation:
Endothermic: A type of reaction that takes in energy from the surroundings to the system - not a mixture.
Exothermic: A type of reaction that releases energy from the system to the surroundings - not a mixture.
Heterogeneous: A type of mixture made up of substances in different states - e.g solids mixed with a liquid - like sand in water.
Homogeneous: A type of mixture made up of substances in the same state - e.g two liquids, like water and oil
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