Chemistry Revision

Question 1

What are some factors that would affect a chemical reaction?

Answer 1

Temperature, surface area (of any solid being used), concentration (of any liquid being used), and the use of a catalyst.

Question 2

What is the definition of a catalyst?

Answer 2

A catalyst is a substance that increases the rate of any chemical reaction without being used up.

Question 3

Give the word and balanced symbol equation for aerobic respiration.

Answer 3

Glucose + Oxygen –> Carbon dioxide + Water + Energy

C6H12O6 + 6O2 –> 6CO2 + 6H2O + ATP

Question 4

What is respiration?

Answer 4

Respiration is the process of releasing energy from glucose.

Question 5

Where does respiration take place in cells?

Answer 5

Respiration takes place in the mitochondria of every cell, and provides energy for the cell to carry out its function.

Question 6

What is an isotope?

Answer 6

Isotopes are different forms of the same element which have the same number of protons but a different number of neutrons.