95 chemistry a unit 1 study guide ? !

collaboration and communication- scientists collaborate because the research problem is so or they might conduct research in exchange for and the time to do the research.

problem solving

step 1 is to the question and determine what information is known and unknown

step 2 is to calculate the

step 3 is to your outcome

measurement- a quantity that has both a and a

to evaluate compare result to the correct value.

to evaluate compare repeated measurements.

significant figures include known digits plus estimated digit.

rules of significant figures:

1. all non-zero digits are -9)

2. zeroes at the of a value do count as significant. (3200ml)

3. zeroes are significant. (508g)

4. zeroes at the of a number that has a are significant. (61.20cm)

5. when adding or subtracting, the answer can have the place of the precise number.

6. for multiplying or dividing, the answer can have the number of the precise measurement.

why the metric system?

1. it is based on the number

2. it crosses barriers.

3. the si unit of temperature is

4. the temperature scale has no negative temperatures

5. to convert a temperature from celsius to kelvin, 273.15

6. to convert a temperature from kelvin to celsius, 273.15

what is the volume of a salt crystal measuring 5.44 x 10^-2m by 2.5 x 10^-3m by 7.9 x 10^-3m?

what is the volume of 50.0 g of calcium if the density of calcium is .50 g/ml?