CHE 105 Ch. 1

Question 1

How do you convert from Celsius to Fahrenheit

Answer 1

Multiple it by 1.8 and add 32
(32C • 1.8 + 32 = 89.6)

Question 2

Celsius to kelvin conversion

Answer 2

You add 273 to the number.
Ex(40C + 273 = 313K)

Question 3

Characteristics of a solid. 

Answer 3

Has definite volume, and it maintains its shape. 

Question 4

Characteristics of a liquid?

Answer 4

Has definite volume and takes the shape of its container. 

Question 5

Characteristics of a gas?

Answer 5

Has no definite shape and no definite volume. 

Question 6

All non-zero digits are always what?

Answer 6

 significant

Question 7

Is 0 counts as a significant figure when it is where?

Answer 7

When is between two nonzero digits or at the end of a number with a decimal in it
Ex(620. lb = 3 sf)
Ex(3.7500 cm = 5 sf)

Question 8

Is zero does not count as a significant figure when ?

Answer 8

When it is at the beginning of a number
Ex(0.00245 mg= 3 sf)
and at the end of a number that does not have a decimal.
Ex(2570m = 3 sf)

Question 9

If the exponent is positive the number is large or small?

Answer 9

Large

Question 10

If the exponent is negative the number is large or small?

Answer 10

Small

Question 11

What are the prefixes for 1-6 used in covalent formulas?

Answer 11

1) mono-
2) di-
3) tri-
4) tetra-
5) penta-
6) hexa-