Chap 1 Part B - Sheet1

Question 1

SI

Answer 1

Système International d’Unites (International System of Units), abbreviated SI.

Question 2

Mass measured in

Answer 2

is measured in kilograms (kg).

Question 3

Length

Answer 3

is measured in meters (m).

Question 4

Volume is measured

Answer 4

in cubic meters (m3).

Question 5

Temperature is measured

Answer 5

in kelvins (K).

Question 6

Time is measured

Answer 6

in seconds (s).

Question 7

The metric unit of mass

Answer 7

is the gram (g) rather than the kilogram (1g =1/1000 kg).

Question 8

The metric unit of volume is

Answer 8

the liter (L) rather than the cubic meter (1L = 1/1000 m3).

Question 9

The metric unit of temperature

Answer 9

is the Celsius degree (C) rather than the kelvin.

Question 10

Sig Figs

Answer 10

number of meaningful digits used to express a value

Question 11

zeros in middle

Answer 11

always significant 94.072 has 5 sig figs

Question 12

zeros in beginning

Answer 12

no significant. 0.0834 has 3 sig figs.

Question 13

zeros at end and AFTER decimal

Answer 13

are significant 138.200 has 6 sig figs

Question 14

zeros at end BEFORE implied decimal

Answer 14

cannot tell whether part of measurement or act only to locate unwritten but implied decimal point. so 23,000 could 2,3,4,5

Question 15

some numbers are exact

Answer 15

and have unlimitd number of sig figures. class has 32 students not 32.0.

Question 16

Scientific notation

Answer 16

A number expressed as the product of a number between 1 and 10, times 10 raised to a power.

Question 17

exp sci notation

Answer 17

1.56 x 10 to -8 = 0.000 000 0156

Question 18

round of rule 1 multiplication

Answer 18

answer cannot have more sig figs than original numbers 278 / 11.70 = 23.8 (3 sig figs)

Question 19

round rule add or substract

Answer 19

answer cannot have more sig figs than either original numbers. 3.18xxx + 0.013 15 = 3.19

Question 20

problem solving unti conversions

Answer 20

SEE 27 28 29

Question 21

Energy

Answer 21

The capacity to do work or supply heat.

Question 22

Temperature

Answer 22

The measure of the amount of heat energy in an object. Commonly reported either in Fahrenheit (F) or Celsius (C) units, but the SI unit for temperature is the kelvin (K). (Note that we say only “kelvin,” not “degrees kelvin.”)

Question 23

relation between K and C background

Answer 23

change in temperature of 1 C is equal to a change of 1 K. The kelvin and the Celsius degree are the same size.

Question 24

0 K is what C

Answer 24

-273.15 C

Question 25

0 C is what K

Answer 25

POSITIVE 273.15

Question 26

freezing and boiling in F

Answer 26

Freeze is 32F Boiling 212F

Question 27

how many degrees F to cover same 100 Celsius degrees

Answer 27

180

Question 28

change 1.0C equals what F

Answer 28

1.0C change is 1.8F

Question 29

thermochromatic

Answer 29

Thermochromic materials change color as their temperature changes.

Question 30

Derived units:

Answer 30

Speed meters per second (m/s) and Density grams per cubic centimeter (g/cm3)

Question 31

Mass.

Answer 31

A measure of the amount of matter in an object.

Question 32

Weight.

Answer 32

A measure of the gravitational force that the earth or other large body exerts on an object.

Question 33

The meter is the standard measure of

Answer 33

length, or distance, in the SI and metric systems.

Question 34

Volume is

Answer 34

the amount of space occupied by an object. The SI unit for volume.the cubic meter, m3.is so large that the liter (1 L = 0.001 m3 = 1 dm3) is much more commonly used.

Question 35

value recorded should

Answer 35

use all the digits known with certainty, plus one estimated digit.