Chemistry Quiz

Question	Answer
What is the empirical formula	A formula that gives the simplest whole-number ratio of atoms in a compound. http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa_pre_2011/chemcalc/chemcalc_higherrev2.shtml
What is a catalyst	a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
What are endothermic reactions	An endothermic reaction describes a reaction in which the reactions absorb energy from its surroundings; usually, but not always, in the form of heat.
What are exothermic reactions	An exothermic reaction is a chemical reaction that releases energy by light or heat.
Would salt dissolving in water an Endo or Exo thermic reaction?	Its endothermic
How do you make hydrocloric acid?	You dissolve hydrogen chloride gas in water and then that makes hydrocloric acid

Resource summary

	Created by First Name about 6 years ago