7th Science Unit 2: Atoms and Elements

________ are the smallest particles from which everything in the world is made.

• atom

• element

• compound

• molecule

___________ is a pure substance made from the same single type of atom.

• atom

• molecule

• compound

• element

________ is a substance in which the atoms of two or more elements are bonded together.

• atom

• element

• compound

This a nitrogen __________.

• compound

• molecule

This is a hydrogen ________.

• compound

• molecule

Water is made of two elements.

• TRUE

• FALSE

Sugar is a compound.

• TRUE

• FALSE

The symbol for gold element is ........

• Ag

• Au

• Al

• Ar

The symbol of the element iron is ........

• Be

• Si

• Fe

• Mg

The symbol of the element oxygen is ......

• S

• N

• F

• O

• C