Elements, compounds and mixtures

A periodic table is a table that lists different __________.

• compounds

• elements

• atoms

• mixtures

Elements are denoted by ________ and compounds are represented by _________.

• chemical symbols & chemical formulae

• chemical formulae & chemical symbols

• 5

• 3

• 2

• 10

What happens when you mix different metals together?

• non metals

• metalloids

• alloys

• solutions

When iron filings and sulfur powder are mixed together at room temperature, which one of the following statements is correct?

• The sulphur gets attracted to the magnet

• The iron may be separated from the mixture by using a magnet.

• A new compound called iron sulphide is formed.

• They cannot be separated from each other.

Which of the following metals is commonly used in making jewelry?

• Nitrogen

• Silver

• Potassium

• Zinc

Which of the following is composed entirely of a single type of atom?

• A single raindrop

• A bottle of ketchup

• A sparkling sugar crystal

• A shiny sheet of aluminum

Which of the following is false about mixtures?

• Mixtures are always made up of two or more substances.

• It is easy to separate the substances in a mixture.

• Mixtures are always in a fixed proportion.

• Mixtures are never made up of elements chemically combined.

What are the two elements that make up the compound water?

• Oxygen and iron

• Hydrogen and nitrogen

• Hydrogen and oxygen

• Sodium and chlorine

Do you believe that the properties of a compound will be the same as the properties of the elements that make up the compound?

• Yes, absolutely!

• No way, that's not true!