Math in Chemistry
How many sig figs are in 200?
1
an example of this would be a bunch of darts in one area not necessarily near the bullseye.
Precise
Burning wood is an example of a
Matter is
anything that has space and takes up space
salad is a _____________ mixture
heterogenous
How many sig figs are in 0.0022?
2
Sara measured the length of a slide 3 times and said she got 12.1 m 12.0 m and 12.1 m. The actual length of the slide is 12.0 m. Sara says that her measurements are accurate but not precise, is she correct? Why?
No. It is accurate and precise
The amount of matter an object contains
mass
The study of the composition of matter and the changes it undergos
Chemistry
The process used to seperate a liquid from a solid in a heterogenous mixture:
filtration
What is 0.77 in scientific notation?
7.7 x 10^-1
True or false: A measurement can be precise but not accurate.
T
studies substances containing carbon
organic chemistry
Studies theories and experiments describing the behavior of chemicals
Physical chemistry
Oil and water is an example of a _____________ mixture
heterogenous mixture
What is 3.1 + 4.23 using what you know about sig figs?
7.3
Why does every measurement contain some uncertainty?
Measuring tools have limits.
Is lemonade a homogenous mixture?
no
The study of the chemistry of living things
biochemistry
Homogenous mixtures are also called
solutions
(3.2 x 10^4) + (4.5 x 10^ 4)
7.7 x 10^4
measurement that is best believed to be true by the scientific community
accepted value
Density is an example of an _____________ property
Intensive
accumulates knowledge for its own sake
Pure chemistry
Distillation seperates substances based primarily on differences in:
boiling point