First Test- Chemistry Study Guide Flashcards
What are the five divisions of chemistry?
organic, inorganic, biochemistry, analytical, and physical
What is distillation?
When a liquid is boiled to produce a vapor that us then condensed into a liquid
What is the difference between mass and weight?
Mass measures the amount of matter while weight is the force that the matter exerts
How can elements be seperated from compunds?
Chemical reactions
What is a theory?
A well-tested explanation for a broad set of observations
What are some examples of matter?
Anything, really (solid, liquid, gas, plasma, etc.)
Why is collaboration an important part of science?
It increases the likelihood of a successful outcome
What is the difference between the 3 states of matter?
Solid- definite shape and voume
Liquid- indefinite shape, definite volume
Gas- a form of matter that takes both the shape and volume of its container
What are extensive properties? Can they be used to identify a substance?
An extensive property depends on the amount of matter in a sample; no
What is a vapor?
The gaseous of a substance that is normally a liquid or a solid at room temperature
What state of matter expands upon heating and is easily compressable?
Gas
What is the difference between a physial and a chemical change?
Physical- property changes, composition does not
Chemical- a change that cause the chemical composition of a substance to change
What must occur for something to be considered a chemical reaction?
One or more substances must change into one or more new substances
How many phases does a homogeneous mixture contain and what is another word for this type of mixture?
1; solution
What is the difference between a mixture and a compound?
Mixture- combination of two or more substances
Compound- two or more elements that are chemically combined
