KS3 7H Atoms, elements and compounds

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

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

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

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

Is water an element or a compound?

• compound

• element

Tags

NGSS.MS-PS1-1

How many different elements are there in Mg(OH)₂

• 2

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

True or false: Hydrogen atoms go around in pairs called molecules

• True

• False

Tags

NGSS.MS-PS1-1

What is the name of the compound formed from sodium and chlorine?

• sodium chlorine

• schloride

• sodium chloride

• chloride sodium

What is the name of a single type of atom?

• cell
• proton
• element
• atom