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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?. 130. 3. How many significant figures does the following value contain?. .000105000. 6.
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Review for CHAPTER 1 Test Chemistry Mrs. Boules
You have 5 secondsfrom ringing the bellto answer the following questions:
How many significant figures does the following value contain? 130. 3
How many significant figures does the following value contain? .000105000 6
How many significant figures does the following value contain? 4.000 4
How many significant figures does the following value contain? 8.2 X 10-3 2
How many significant figures does the following value contain? 1000 1
How many significant figures does the following value contain? 50,000. 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 10-4 d
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
Bring a calculator and a piece of paper for the next question
Please Round Appropriately 18.5 X 2.675 49.5
Moving on to ……Density What is the density equation? 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 densityif 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: 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=0C + 273
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!