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Chem Applied Unit 1
-89°C expressed in kelvin is...
The element in group 11, period 4 is...
Chem Applied Unit 1
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Answers
1
The element in group 11, period 4 is...
Roentigenium
Silver
Copper
Gold
2
-89°C expressed in kelvin is...
184.15K
362.15K
-362.15K
-184.15K
3
The Law of Conservation of Energy states...
The amount of energy in the universe is constant
Energy cannot be destroyed
Energy cannot be created
All of the Above
4
"If the temperature of water is increased then the density will decrease" Which is true?
All of the above
This statement is a hypothesis
The temperature of water is the independent variable
The density of water is the dependent variable
5
Which of the following is true about the archer who shot the arrows?
They are neither precise nor accurate
The are both precise and accurate
They are accurate, but not precise
They are precise, but not accurate
6
An element that is conductive of heat and electricity, dense and solid at room temp is most likely in which color
Blue
Orange
Red
Green
7
The elements shown in green are all...
Metalloids
Nonmetals
Metals
Liquids
8
4,900 correctly expressed in scientific notation is...
4.9 x 10-3
4.9 x 102
4.9 x 103
4.9 x 10-2
9
Which group on the periodic table is known as the halogens?
Group 1
Group 17
Group 18
Group 2
10
Which element is colorless, odorless and unreactive?
Potassium, K
Fluorine, F
Silicon, Si
Argon, Ar
11
The branch of chemistry that studies mechanism, rate and energy transfer is ___
Physical Chemistry
Organic Chemistry
Inorganic Chemistry
Analytical Chemistry
12
The image below represents
A compound
A mixture
An element
A solution
13
In the scientific method, after completing an experiment, what is the next step?
Publish your results
Draw conclusions
Analyze Data
Form a Hypothesis
14
To convert from Celsius to kelvin the rule is to....
Multiply by 273.15
Add 273.15
Divide by 273.15
Subtract 273.15
15
The image below shows...
A mixture containing two compounds
A compound containing two elements
A single element
A mixture of two elements
16
What is the SI unit for temperature
Fahrenheit
Kelvin
Celsius
Degrees
17
Why do we study chemistry?
To prepare you for future careers
All of the above
To explain the natural world
To become informed citizens
18
298.15K expressed in Celsius is ...
571.3°C
-571.3°C
25°C
-25°C
19
The highly reactive metals that explode when they come into contact with water are shown in...
Yellow
Red
Orange
Green
20
The element in group 2 and period 4 is...
Titanium
Strontium
Zirconium
Calcium
21
When working in the lab what must always be worn?
Flip-flops
Long, dangly jewelery
Goggles
Sandals
22
Which of the following is the correct formula for density?
D=m2V
D=V/m
D=m/V
D=mV
23
An element that is a good conductor of heat and electricity is most likely a...
Nonmetal
Metalloid
Metal
24
6.489x10
-4
expressed in standard form is....
6,489,000
0.00006489
6,490,000
0.0006489
25
Which element has the symbol Fe?
Fellium
Iron
Fluorine
Francium
26
Which branch of chemistry studies chemicals containing carbon?
Organic Chemistry
Inorganic Chemistry
Biochemistry
Analytical Chemistry
27
Which element is a highly reactive metal?
Colbalt, Co
Fluorine, F
Sodium, Na
Gold, Au
28
Which of the following elements is a nonmetal?
Chromium, Cr
Carbon, C
Calcium, Ca
Kryptonite, Ky
29
In an experiment the variable that the scientist purposefully changes is the....
Dependent Variable
Control
Constant
Independent Variable
30
0.035 correctly expressed in scientific notation is...
3.5x10-2
3.5x102
3.5x10-3
3.5x103
