UNIT ONE

5. It is a fancy word for when things burn. It's what happens when you light a fire, and the stuff turns into smoke and ashes.
7. It is when something combines with oxygen, like when iron rusts. It's a slow change that happens when things react with the air over time.
8. It is the stuff we use to make fire or power machines. Like wood for a campfire or gasoline for a car.
9. It is a tiny, quick burst of fire or light, like when you rub two sticks together and a little fiery bit pops out.

1. It is what makes things warm or hot. It's like when you touch a hot stove, and it feels really warm.
2. It is the cloudy stuff that comes out of a fire. It's made up of tiny bits of things that are burning, and it can make your eyes water.
3. When something burns, it turns into fire and changes into ashes. Like when you toast marshmallows over a campfire, they get brown and crispy.
4. Light It means to make it start burning or shining, like when you light a candle with a match.
6. It means to start a fire. It's like when you use a match to make a fire begin.
8. It is hot, glowing stuff that happens when things burn. It gives off light and heat.