Pure elements

Pure elements are made up of

• only one type of atom

• two types of atoms

• many kinds of atoms

• every atom is exactly the same

14 carat gold is

• 75% pure

• 100% pure

• less than 58% pure

• 58 parts gold out of 24

24 carat gold is

• yellow

• brown

• red

• grey

Silver marked with 900 is

• 925 atoms out of 1000 atoms

• is more pure than 92.5%

• 900 atoms are other elements

• 90% pure

Pure diamonds are made of

• carbon and nitrogen

• carbon atoms only

• carbon and hydrogen

• carbon and boron

Pure diamonds are

• cloudy and opaque

• made of glass

• translucent

• made up of many precious elements

Blue diamond is made up of

• carbon and nickel

• carbon and hydrogen

• carbon and nitrogen

• carbon and boron

Yellow diamond is made up of

• nitrogen and carbon

• nickel and carbon

• hydrogen and carbon

• gold and carbon

Green diamond is made up of

• nitrogen and carbon

• nickel and nitrogen

• nickel and carbon

• carbon and boron

The rarest diamond is

• white

• blue

• yellow

• green