7 B rockets lesson 1

The armed forces of a country or soldiers of a country.

• determined

• military

• communities

• diligent

A change in the chemical structure.

• reactions

• exploded

• compounds

• elements

Hardworking and careful.

• reactions

• determined

• diligent

• exploded

To violently burst.

• military

• diligent

• explode

• reactions

When you decide to do something and you won't let anyone stop you.

• exploded

• diligent

• determined

• communities

A basic substance that cannot be broken down in smaller parts.

• exploded

• element

• compounds

• reaction

A group of people that live in an area

• compounds

• elements

• reactions

• communities

A mixture, something that is made of two elements, like water.

• elements

• compounds

• reactions

• exploded

What is the black powder called that cause the explosions when touched by fire?

• force

• fireworks

• rockets

• gunpowder

What was the world's first rocket called? It was invented by the Chinese.

• gunpowder

• fire-arrow

• fireworks

• space rockets