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Chem fall final review
Terms in this set (16)
the branch of science that deals with the identification of the substances of which matter is composed
physical substance in general
a coherent, typically large body of matter with no definite shape.
List the steps of the scientific method
The constant in a experiment
All the quantities that could change in an experiment
What is the difference between a hypothesis and a theory?
A theory is an explanation about something and a hypothesis is a guess about an outcome
What is quantitive data?
It is data in numbers
What is qualitative data?
It is data in words without numbers
What is the SI system of measurement?
The international system of units
What are the SI units for length, mass, time, volume, and amount of a substance
Meters, grams , liters, seconds, mole
how close a measured value is to an accepted value
how close a series of measurements are to one another
What is a characteristic of physical property?
A property that can be observed or measured without changing the chemical composition
What is a characteristic of a chemical property?
The ability of a substance to change into a new substance
What distinguishes physical changes from chemical changes
Physical changes can be touched and seen
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