Scientific Method
This is a type of educated guess based on observations as to what will happen in an experiment.
What is Hypothesis?
Iron rusting is an example of a chemical or physical change?
Chemical change
What is the unit for density of solids?
g/cm3
According to _______________ Law, crushing a closed container of gas would increase the pressure.
Boyle's Law= pressure and volume
Charles Law= temperature and volume
What is a control variable?
Variable that is not changed and stays constant in an experiment.
Which has more inertia? A ball weighing 100 lbs or a ball weighing 200 lbs.
200 lbs.
What does a graduated cylinder help determine about an object or a liquid?
Measuring the speed of molecules can determine the substances ________________.
Temperature
During an endothermic reaction, what happens to the energy?
It is absorbed
Where is the dependent variable located on a graph?
Located on the y-axis.
Is malleability a chemical or physical property?
physical property
What is the volume of a box 5 inches wide, 5 inches long, and 5 inches deep? (INCLUDE YOUR LABEL)
125 inches CUBED
A liquid that flows fast has a high or low viscosity?
Low viscosity
Viscosity- the resistance to flow
A liquid becoming a solid is an ______________ reaction, such as freezing water.
Exothermic reaction
I will feel lazy if I eat too much.
Variables: 1. Amount of food eaten 2. Level of laziness
Which one is the dependent variable?
Level of laziness
The ability to dissolve in a substance, such as water, is called
Solubility
The mass of a substance is 100 grams. The volume is 50cm3. What is the density of the substance? (include your units.
2 g/cm3
What is the reverse reaction of melting?
Freezing
Liquid becoming a gas is a ____________ reaction. Such as boiling water.
Endothermic reaction