Question

assignment: key terms in chemistry
name: celianyu scharaga date: 10/3/25 class: bhollar
instructions: read each sentence below and decide which science term best completes it. choose from the words in the box: solid, liquid, gas, density, flammability, states of matter, reactant, product, chemical reaction.

1. water turns to ice when it changes from a ____ to a ____.
2. the ______ of wood measures how easily it can catch fire.
3. when baking soda and vinegar mix, a ______ happens, creating new substances.
4. the ______ of oil is less than that of water, so oil floats.
5. air is an example of a ______ that fills up the entire space of a container.
6. in the reaction between baking soda and vinegar, baking soda is a ______.
7. when water boils, it changes into a different ______ called steam.
8. the result of a chemical reaction is called the ______.
9. there are three main ______: solids, liquids, and gases.
10. burning wood is an example of a ______, because it changes into new substances like ash and smoke.

challenge: on the back of this page, describe what happens in a chemical reaction when you make toast. which terms from the box would you use to describe the process?

Explanation:

1. Water changes from a liquid to a solid when it freezes into ice.
2. Flammability measures how easily a material can catch fire.
3. Mixing baking soda and vinegar causes a chemical reaction that forms new substances.
4. Density determines whether a substance floats or sinks; oil has a lower density than water.
5. Air is a gas that fills its container.
6. In a chemical reaction, baking soda is a reactant when reacting with vinegar.
7. When water boils, it changes to a gas (steam), which is a different state of matter.
8. The result of a chemical reaction is called the product.
9. Solids, liquids, and gases are the three main states of matter.
10. Burning wood is a chemical reaction as it forms new substances like ash and smoke.

Answer:

1. liquid, solid
2. flammability
3. chemical reaction
4. density
5. gas
6. reactant
7. state of matter
8. product
9. states of matter
10. chemical reaction