Scientific Method
What is the first step of the scientific method?
Observation
What is a constant?
The variable that is unchanged in the experiment.
What is matter?
anything that has mass and takes up space
WHat is a chemical reaction?
charge of one substance going to another.
What is the compound of water?
H2O
What is the final step in the scientific method?
Who changes the independent variable?
The experimenter
What are chemical substances?
have a definite makeup
What is an exothermic reaction?
Energy is emmited during the reaction
What is a solution?
mixture of two substances
How many steps are there in the scientific method?
6
What is the controlled variable used for?
To compare to the rest of the experiment.
what are elements?
all the same type of atom
What is an endothermic reaction?
Energy is absorbed during the reaction
How much water makes up Earth?
75%
What is a hypothesis?
A possible answer that can be tested.
What is the dependent variable?
The variable that is affected by other factors
WHat is a compound?
2 or more elements bonded together
What is activation energy?
Energy required to start a chemical reaction
True or False. Bases are sour?
False - Bitter
What are the six steps in the scientific method?
observation, question, hypothesis, experiments, analysis, and conclusion.
True or False? The independent variable is affected by other variables?
FALSE - changed by experimenter
What are examples of lipids?
Fats and Oils
What is the conservation of matter?
Matter cannot be created or destroyed under normal conditions
What is the PH of acids?
0-7