Exam One Topics pt. 1

Question 1

Scientific Method

Answer 1

Observing matter and the changes it undergoes systematically
- Make an Observation
- Formulate a Hypothesis
- Test your Hypothesis (Experiment)
- Analyze the Data
- Make Conclusions
- Share Results

Question 2

Mixtures

Answer 2

Two types of things which can still be separated

Homogeneous - Mixtures which are uniform throughout.
□ EX. Air
Heterogeneous - Mixtures which can be easily separated, varies throughout.
□ EX. Blood

Question 3

Pure Substance

Answer 3

One type of thing.

Elements - One type of atom on the periodic table.
□ EX. O2
Compounds - Multiple types of atoms on the periodic table
□ EX. H2O

Question 4

Mega(M)

Answer 4

1 x 10^6 or 10^6

Question 5

Kilo(k)

Answer 5

1 x 10^3 or 10^3

Question 6

Deci(d)

Answer 6

1 x 10^-1 or 10^-1

Question 7

Centi(c)

Answer 7

1 x 10^-2 or 10^-2

Question 8

Milli(m)

Answer 8

1 x 10^-3 or 10^-3

Question 9

Micro(mew)

Answer 9

1 x 10^-6 or 10^-6

Question 10

Nano(n)

Answer 10

1 x 10^-9 or 10^-9

Question 11

English Length Conversions

Answer 11

2.54cm to 1inch
12inch to 1ft
3ft to 1 yard
5,280ft to 1 mile

Question 12

SI Length Conversions

Answer 12

1 deci-meter^3 = 1 Liter
1cm^3 = 1 milliliter

Question 13

Mass Conversions

Answer 13

1kg to 2.205lbs
16oz to 1lbs

Question 14

Temperature

Answer 14

Temperature in Kelvin = Temperature in Celsius + 273.15
T in degrees F = 9/5 T in degree C +32
T in degrees C = (T in degrees F - 32)5/9

Question 15

Significant Figure Rules

Answer 15

Significant Figures include all certain digits and one uncertain digit
All non-zero digits are significant.
All leading zeros( to the left of a non-zero digit) aren’t significant.
All zeros between non-zero digits are significant.
Terminal zeros (after a non-zero digit) to the right of a decimal are significant.
Terminal zeros in a measurement without a decimal are not significant.

Question 16

Significant Figures - Multiplication/Division

Answer 16

The answer should have the same number of significant figures as the measured quantity with the least number of significant figures.

Question 17

Significant Figures - Addition/Subtractions

Answer 17

The answer should have the same number of decimal places as the measured quantity with the least number of decimal places.