Chemical reactions Flashcards
1
Q
What is a reactant?
A
a chemical that reacts with another chemical during a chemical reaction
2
Q
What is a product?
A
a new substance that is formed in a chemical reaction
3
Q
What is effervescence?
A
bubbles of gas being produced
4
Q
What is exothermic?
A
a chemical reaction that produces heat. That energy is transferred from the chemicals to the surroundings. It increases in temperature
5
Q
What is endothermic?
A
a chemical reaction that absorbs heat energy from the surroundings. It decreases temperature
6
Q
What is a catalyst?
A
speeds up the rate of reaction by reducing the minimum energy needed to start the reaction
7
Q
What is activation energy?
A
the minimum amount of energy required to start the reaction
