Which statement most resembles a scientific theory?
When the pressure on a sample of oxygen gas is increased 10%, the volume of the gas decreases by 10%.
The volume of a gas is inversely proportional to its pressure.
A gas is composed of small particles in constant motion.
A gas sample has a mass of 15.8g and a volume of 10.5 L.
Where can you find chemicals?
In a hardware store
In a chemical stockroom
All around you and even inside of you
All of the above
What statement best defines chemistry?
The science that studies solvents, drugs, and insecticides
The science that studies the connections between the properties of matter and the particles that compose that matter
The science that studies air and water pollution
The science that seeks to understand processes that occur only in chemical laboratories
According to the scientific method, what is a law?
A short statement that summarizes a large number of observations
A fact that can never be refuted
A model that gives insight into how nature is
An initial guess with explanatory power
Which statement is an example of an observation?
In a chemical reaction, matter is conserved.
All matter is made of atoms.
When a given sample of gasoline is burned in a closed container, the mass of the container and its contents does not change.
Atoms bond to one another by sharing electrons.
Which characteristic is necessary for success in understanding chemistry?
Curiosity
Calculation
Commitment
