Basic Chemistry Quiz

What is an element?

• A pure substance made up of only one type of atom

• A mixture of different substances

• A combination of two elements

• A solution of different compounds

Which statement best defines an atom?

• The smallest unit of a compound

• The smallest particle of an element that still has the properties of that element

• A mixture of protons and neutrons

• A combination of two elements

Where are non-metals found in the periodic table?

• In the middle

• On the left side

• On the right side

• At the bottom only

What is a compound?

• A mixture of elements

• A pure substance made of two or more elements chemically combined

• A solution of different substances

• A physical mixture of substances

When sodium (metal) combines with chlorine (non-metal), what is the correct name for the compound formed?

• Sodium chloride

• Sodium chlorinium

• Sodium chlorate

• Sodium chloric

What is air?

• An element

• A compound

• A mixture of gases

• A pure substance

What indicates a chemical reaction is taking place?

• Melting of ice

• Dissolving sugar in water

• Color change and bubble formation

• Evaporation of water

In the word equation "magnesium + oxygen → magnesium oxide", which are the reactants?

• Magnesium oxide only

• Magnesium and oxygen

• Magnesium only

• Oxygen only

What is the chemical test for hydrogen gas?

• It turns lime water milky

• It makes a squeaky pop with a lit splint

• It relights a glowing splint

• It turns litmus red

What happens to blue litmus paper in an acid?

• Stays blue

• Turns green

• Turns red

• Becomes colorless