Elements

Which is the correct definition for an element?

• A substance made up of only one type of atom that can be broken down

• Two or more substances that are not chemically combined

• Two or more different atoms that are chemically combined

• A substance made up of only one type of atom that cannot be broken down

C is the correct chemical symbol for which element?

• calcium

• copper

• carbon

• caesium

The smallest part of an element is called...

• a compound

• a mixture

• an element

• an atom

Tags

NGSS.MS-PS1-5

Which is the correct definition for a compound?

• A substance made up of only one type of atom that can be broken down

• Two or more substances that are not chemically combined

• Two or more different atoms that are chemically combined

• A substance made up of only one type of atom that cannot be broken down

What is the missing word? The properties of a compound are __________ the elements it is made up of.

• the same as

• different to

Which is correct?

• iron and sulfur are both metals

• iron and sulfur are both non metals

• iron is a non metal and sulfur is a metal

• iron is a metal and sulfur is a non metal

What is the correct name for CO?

• carbon dioxide

• carbon monoxide

• cobalt

• carbon oxide

Which elements are present in H₂SO₄?

• hydrogen and oxygen

• hydrogen, oxygen and sodium

• hydrogen, oxygen and sulfur

• hydrogen, oxygen and silicon

Tags

NGSS.MS-PS1-1

How many atoms of aluminium are there in the chemical formula for aluminium oxide: Al₂O₃

• 2

• 3

• 5

• 1

Tags

NGSS.MS-PS1-1

Which element has the chemical symbol Ni?

• nitrogen

• nickel

• sodium

• neon