Ch 1 Problems

Question 1

One billion millimeters equal one kilometer.

True or False?

Answer 1

False

One MILLION millimeters equal one kilometer

Question 2

One million micrometers is the same as one hundred centimeters
True or False?

Answer 2

True

Question 3

One Fahrenheit degree unit is larger than a Celsius degree unit.
True or False?

Answer 3

False

One Fahrenheit degree unit is SMALLER than a Celsius degree unit.

Question 4

If the temperature of an object increases by 10 degreesC, then this corresponds to an increase of 10 K.
True or False?

Answer 4

True

Question 5

Precision is a measure of how close an experimental value is to the correct answer.
True or False?

Answer 5

False

ACCURACY is a measure of how close an experimental value is to the correct answer.

Question 6

The value 0.06030010 has six sigfigs.

True or False?

Answer 6

False

The value 0.06030010 has SEVEN sigfigs.

Question 7

The value 2.4060 has five sigfigs.

True or False?

Answer 7

True

Question 8

18.3-0.6394+86.9=?

Answer 8

104.6

Question 9

(18.3/0.6394)•86.9=?

Answer 9

2490

Question 10

18.3—0.6394/86.9=?

Answer 10

.204

Question 11

Common human body temp is 37.0 degrees C. Convert this to F and to K.
(37.0 is not exact)

Answer 11

98. 6 degrees F

310. 2 K

Question 12

A molecule of oxygen is about to collide with your face at 482.1 m/s.
how fast is that in mph?

Answer 12

1,079 mph

482. 1m/s • 60s/min • 60min/hr • mile/1609m= 1078.657
483. 1 has 4 sigfigs so the answer will have 4 sigfigs.