Chemistry Basics Quiz

Which statement best describes an element?

• A substance made of two or more types of atoms chemically bonded

• A substance made of only one type of atom

• A substance where atoms are not bonded and can be separated easily

• A mixture that looks the same throughout

Which is the correct rule for element symbols?

• All letters are lowercase

• All letters are uppercase

• First letter capital, second (if any) lowercase

• First letter lowercase, second uppercase

What is the correct symbol for sodium?

• So

• Sd

• Na

• Sn

Which is a molecular element?

• O₂

• CO₂

• H₂O

• CaCO₃

Which statement is true of pure substances?

• They contain different particles not bonded together

• Their particles are all the same throughout

• They are always mixtures

• They must be liquids

In H₂O, how many hydrogen atoms are in one molecule?

• 1

• 2

• 3

• 4

In CO₂, how many oxygen atoms are in one molecule?

• 1

• 2

• 3

• 4

How many different elements are present in CaCO₃?

• 2

• 3

• 4

• 5

What is a solution?

• A pure element

• A mixture where one substance dissolves in another

• A mixture where nothing dissolves

• Any liquid

In seawater, which is the solute and which is the solvent?

• Water = solute; salt = solvent

• Salt = solute; water = solvent

• Salt = solvent; water = solute

• Both are solvents