Review for

CHAPTER 1 TestChemistry

Mrs. Boules

You have 5 seconds

from ringing the bellto answer the

following questions:

How many significant figures does the following value

contain?

130.

3

.000105000

How many significant figures does the following

value contain?

6

4.000

How many significant figures does the following

value contain?

4

8.2 X 10-3

How many significant figures does the following

value contain?

2

1000

How many significant figures does the following

value contain?

1

50,000.

How many significant figures does the following

value contain?

5

Scientific Notation• Which of the following is the correct

scientific notation for 0.0005250?

a. 52.50 X 10-4

b. 5.25 X 10-4

c. 52.50 X 10-3

d. 5.250 X 10-4d

Which of the following is the correct value for the 8.8 X 10-3?

a. 8,800

b. 8,800.

c. .0088

d. .000880

c

Please explain the rounding rule when

adding and subtracting.

The answer must contain as many decimal places as the value with the least

number of decimal places.

• Bring a calculator and a piece of paper for the next question..

Please Round Appropriately

418.55

312.12

+ .0150

730.68

Round the following number to

3 significant figures:

412.5001

413

Round the following to 3 significant figures:

5.5255.52

• Bring a calculator and a piece of paper for the next question

Please Round Appropriately

18.5

X 2.675

49.5

What is the density equation?

Moving on to ……Density

D=Mass

Volume

In the lab, you were handed a block of lead…..EXPLAIN

how would you find the density of this lead block??Be as thorough as possible

• Bring a calculator and a piece of paperfor the next question

Calculations….Don’t for get rounding rules!!

Calculate the density if a block of copper has a mass of 15.5grams and a volume of 3.5cm3

What is the density of water?

1.00g/ml

Name this Symbol:

FeCaHg

Iron

Calcium

Mercury

Continuation…symbols

Na

W

Sr

Sodium

Tungsten

Strontium

What symbol is this element?

FluorineXenon

Francium

F

Xe

Fr

Continuation

SilverHeliumLithium

Ag

He

Li

What are the 4 states of

matter? Solid

Liquid

Gas

Plasma

What is the equation for converting from

Celsius to Kelvin?

K=0C + 273

• Bring a calculator and a piece of paper

Convert 30.oC to Kelvin.

303K

What is the difference between

physical and

chemical change?

Define

Element?The smallest, indivisible part of a

substance

Define Homogeneous

MixtureA mixture in which all the parts look similar

From the lab….

• Indicate if the following is a physical or chemical change:

Melting Birthday Candle Wax

Adding Hydrochloric Acid to Magnesium

Grinding Copper Sulfate

P

C

P

Is the following an example of homogeneous or heterogeneous

Mixture?

Air

Italian Dressing

Milk

Homogeneous

Heterogeneous

Homogeneous

Please study tonight!!

Test tomorrow!