A characteristic of a substance that can be observed without changing the substance into another substance.
What is physical property?
100
It can be described in terms of physical changes and chemical changes.
How can matter be described?
100
What are the substances to start with in a reaction and the substances you get at the end?
Reactants and products.
100
What is required to get a chemical reaction started?
A certain amount of activation energy is required to start a chemical reaction.
100
What are the three things to start and maintain a fire?
Fuel, oxygen, and heat.
200
A material that releases energy when it burns.
What is fuel?
200
What are some examples of physical changes?
Bending, crushing, breaking, and cutting.
200
It tells you the relative amount of a reactant or a product that takes part in the reaction.
What does a coefficient tell you in an equation?
200
List the factors that affect the rates of reaction.
Surface area, temperature, concentration, and the presence of catalysts or inhibitors
200
What are some common sources of home fires?
Heaters, cooking, or faulty electrical wiring difficulties.
300
This states that, during a chemical reaction, matter is neither created nor destroyed.
What is conservation of matter?
300
A solid that forms from solution during a chemical reaction.
What is precipitate?
300
The reaction when two or more elements or compounds combine to make a more complex substance.
What is a synthesis?
300
They are cells in your body which contains biological catalysts.
What are enzymes?
300
How does baking soda put a fire out?
Baking soda decomposes when heated and releases carbon dioxide when burning the oxygen away from the fire.
400
catalyst
What is the material that increases the rate of a reaction by lowering the activation energy?
400
What is one common indication of a change in energy?
Temperature.
400
What are used to separate two or more products?
Plus signs.
400
List the two ways how faster-moving particles can increase the reaction rate.
1. The particles come in contact more often (more chances for a reaction to happen
2. Faster-moving particles have energy, this increased energy causes more particles of the reactants to get over the activation energy "hump"
400
Name some fire-prevention and fire-safety features.
Safety ladder, smoke detector, emergency phone numbers, water heater, furnace, baking soda, or a fire extinguisher.