review for chapter 1 test
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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. - PowerPoint PPT PresentationTRANSCRIPT
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Review for
CHAPTER 1 TestChemistry
Mrs. Boules
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You have 5 seconds
from ringing the bellto answer the
following questions:
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How many significant figures does the following value
contain?
130.
3
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.000105000
How many significant figures does the following
value contain?
6
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4.000
How many significant figures does the following
value contain?
4
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8.2 X 10-3
How many significant figures does the following
value contain?
2
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1000
How many significant figures does the following
value contain?
1
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50,000.
How many significant figures does the following
value contain?
5
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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
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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
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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.
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• Bring a calculator and a piece of paper for the next question..
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Please Round Appropriately
418.55
312.12
+ .0150
730.68
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Round the following number to
3 significant figures:
412.5001
413
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Round the following to 3 significant figures:
5.5255.52
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• Bring a calculator and a piece of paper for the next question
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Please Round Appropriately
18.5
X 2.675
49.5
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What is the density equation?
Moving on to ……Density
D=Mass
Volume
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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
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• Bring a calculator and a piece of paperfor the next question
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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
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What is the density of water?
1.00g/ml
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Name this Symbol:
FeCaHg
Iron
Calcium
Mercury
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Continuation…symbols
Na
W
Sr
Sodium
Tungsten
Strontium
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What symbol is this element?
FluorineXenon
Francium
F
Xe
Fr
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Continuation
SilverHeliumLithium
Ag
He
Li
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What are the 4 states of
matter? Solid
Liquid
Gas
Plasma
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What is the equation for converting from
Celsius to Kelvin?
K=0C + 273
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• Bring a calculator and a piece of paper
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Convert 30.oC to Kelvin.
303K
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What is the difference between
physical and
chemical change?
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Define
Element?The smallest, indivisible part of a
substance
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Define Homogeneous
MixtureA mixture in which all the parts look similar
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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
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Is the following an example of homogeneous or heterogeneous
Mixture?
Air
Italian Dressing
Milk
Homogeneous
Heterogeneous
Homogeneous
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Please study tonight!!
Test tomorrow!