Chemistry Fundamentals Quiz 1

What happens in all chemical changes?

• A gas is produced.

• Heat energy is given out.

• Elements change into a compound.

• One or more new substances are formed.

A compound contains:

• only one type of atom.

• only one element.

• only two elements joined together.

• at least two elements joined together.

Which of the following particle diagrams show molecules of a mixture of elements?

• Diagram A

• Diagram B

• Diagram C

• Diagram D

The particle diagram above shows:

• an element.

• a compound.

• a mixture of elements.

• a mixture of compounds.

The correct way to write the chemical symbol for the element calcium is:

• ca

• CA

• Ca

• cA

Which of these elements is used to build bridges?

• Iron

• Gold

• Oxygen

• Carbon

Which list contains only non-metal elements?

• oxygen, nitrogen, argon, silicon

• chlorine, oxygen, sulfur, iron

• bromine, helium, carbon, air

• gold, silver, platinum, mercury

Which list contains only typical properties of metals?

• good conductor of heat, brittle, low melting point

• poor conductor of heat, strong, high melting point

• good conductor of electricity, strong, high melting point

• poor conductor of electricity, weak, low melting point

Which of the following lists contains only elements?

• air, iron, iodine, magnesium

• zinc, gold, aluminium, oxygen

When metals and non-metals form a compound, the compound will usually:

• be easily broken up.

• have the same properties as the elements.

• take up a larger volume than the elements.

• have different properties to the elements.