1B Matter and Measurements

Question 1

What is the rule when measuring?

Answer 1

record all known plus one estimate

Question 2

Multiplying or dividing

Answer 2

Least number of sig figs

Question 3

Adding or subtraction

Answer 3

Least number of decimal places

Question 4

Temperature

Answer 4

a measure of the average kinetic energy (movement) of a body.

Question 5

What are the three scales of temperature?

Answer 5

Celsius, Kelvins, Farenheit

Question 6

Celsius to Kelvins

Answer 6

K = C + 273

Question 7

celsius to F

Answer 7

9/5 (C) + 32

Question 8

Fahrenheit to C

Answer 8

5/9 (F - 32)

Question 9

The calorie

Answer 9

The amount of heat req. to raise the T of 1 g of water from 14.5 oC to 15.5 oC.

Question 10

1 food calorie =

Answer 10

1000 calories (1 kcal)

Question 11

1 cal=…….J

Answer 11

4.184 J

Question 12

The amount of heat required depends on?

Answer 12

How much things have, mass and change in temperature

Question 13

q or the amount of heat=

Answer 13

(m)(C)(change in T)

Question 14

Density

Answer 14

is an identifying property of a pure substance. The density of a pure substance never changes at a given temperature

Question 15

Formula for density

Answer 15

D=m/v

Question 16

Density of pure water

Answer 16

1.00g/mL