Review for CHAPTER 1 Test Chemistry Mrs. Boules

You have 5 seconds from ringing the bell to answer the following questions:

How many significant figures does the following value contain?

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 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 ? a X b.5.25 X c X d X d

Which of the following is the correct value for the 8.8 X ? a. 8,800 b. 8,800. c d 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

Round the following number to 3 significant figures:

Round the following to 3 significant figures:

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

Please Round Appropriately 18.5 X

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 3.5cm 3

What is the density of water? 1.00g/ml

Name this Symbol: Fe Ca Hg Iron Calcium Mercury

Continuation…symbols Na W Sr Sodium Tungsten Strontium

What symbol is this element? Fluorine Xenon Francium F Xe Fr

Continuation Silver Helium Lithium 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= 0 C + 273

Bring a calculator and a piece of paper

Convert 30. o C to Kelvin. 303K

What is the difference between physical and chemical change?

Define Element? The smallest, indivisible part of a substance

Define Homogeneous Mixture A 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!