Which is the proper order of metric prefixes?

kilo, hecto, deka, (base), deci, centi, milli

The knowledge of isotopes somewhat disproved which part of Dalton's Atomic Theory?

atoms of 1 element are identical in mass, size, & properties

What happens if you put a hot pan into a sink full of cool water?

a.The pan tranfers its energy to the cold water.

When an exponent is negative...

the number is less than or equal to 1

What is true about the discovery of electrons?

cathode rays are comprised of electrons

JJ Thomson's discovery in the late 1800's somewhat disproved which of Dalton's Atomic Theory?

atoms are the smallest particles of matter

What is true about the Gold Foil Experiment?

atoms were found to be mostly empty space

Why do metals have low specific heat capacities?

a.They do not absorb much energy B4 their temperature ↑ .

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BMHS Semester 1 Review RChem

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Review for semester 1 exam

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Questions 78

Answers

1
How many significant figures are there in 40.07 L?
3
1
2
4
2
Which is the proper order of metric prefixes?
kilo, deka, hecto, (base), deci, centi, milli
kilo, hecto, deci, (base), deka, centi, milli
kilo, hecto, deka, (base), deci, centi, milli
kilo, hecto, deka, (base), milli, centi, deci
3
Choose the element
brass
gold
water
aluminum oxide
4
See image for question...
D
C
A
B
5
Which of the following elements is a metal?
vanadium
hydrogen
krypton
boron
6
Meter, Liter, Gram = which measurements, in that same order?
volume, length, mass
length, volume, mass
length, mass, volume
mass, volume, length
7
When adding measured values, the answer is expressed ...
C
A
D
B
8
100 cm =
1 m
0.1 m
10 m
100 m
9
2.4 g x 15.82 =
37.9 g
37.968 g
38 g
37.96 g
10
The least reactive element in this set is...
helium
barium
fluorine
calcium
11
The knowledge of isotopes somewhat disproved which part of Dalton's Atomic Theory?
atoms of 1 element are identical in mass, size, & properties
atoms combine in simple ratios to make compounds
during reactions, atoms are combined and rearranged
all matter is made of atoms
12
1.01 m x 0.33 m x 9.2 m = ? This should be expressed in...
5 sf
2 sf
4 sf
3 sf
13
45.792 g - 2.3 g = ? This should be expressed to the ...
tenths place
thousandths place
ones place
hundredths place
14
In which case are all the zeros NOT significant figures?
¨4500. mL
¨4005 g
¨405.0 cm
¨0.045 m
15
1 yard is closest to...
1 millimeter
1 kilometer
1 meter
1 centimeter
16
Which element is NOT a metalloid?
aluminum
germanium
silicon
arsenic
17
When multiplying measured values, the answer is expressed...
B
C
D
A
18
Look at your P.T. When arranged by ______ the elements result in groups w/ similar properties.
atomic number
average atomic mass
atomic radius
mass number
19
In scientific notation, the coefficient ...
always comes first
all of these are true
is between 1 and 9.9
shows only significant figures
20
Using dimensional analysis, which is the correct setup to convert 12.3 m into cm?
B
A
C
21
94.20 g ÷ 3.16722 mL =
29.742 g/ml
29.7422 g/ml
29.7 g/ml
29.74 g/ml
22
What happens if you put a hot pan into a sink full of cool water?
a.The pan tranfers its energy to the cold water.
a.The cold water transfers its energy tothe hot pan.
H2Oabsorbs the cold from thesink and the heat from the pan.
pan & cold H2O staythetemps they were B4 they were combined.
23
When an exponent is negative...
the number will have significant zeros
the number is less than or equal to 1
the number is greater than or equal to 1
the number is negative
24
Which of the following is true?
all of these are equal
1 L = 1000 cm3
1000 mL = 1000 cm3
1 L = 1000 mL
25
In the number 4.56 x 10 ³ mL, the 4.56 is called the ...
base number
exponent
coefficient
measurement
26
The most reactive element is...
lithium
oxygen
sodium
fluorine
27
See image to answer...
B
A
D
C
28
Choose the physical change:
enzymes breaking down food
candle wax solidifies
iron oxidizing (rust)
using an alkaline battery
29
Whichis NOT an ordinary chemical change?
iron rusting to make iron oxide
food rotting
silver tarnishing
uranium decaying into lead
30
The most reactive group of metals is...
alkali metals
alkaline earth metals
the other metals
transition elements
31
Choose the intensive physical property:
volume
mass
density
length
32
What is true about the discovery of electrons?
electrons exist because they pass through gold foil
cathode rays are comprised of electrons
electrons have the same mass as protons
Rutherford's research led to it
33
How many significant figures are there in 28.6 grams?
1
2
4
3
34
Which of the following elements is an alkaline earth metal?
oxygen
gold
potassium
calcium
35
How many significant figures are there in 0.04604 m ?
6
5
4
3
36
JJ Thomson's discovery in the late 1800's somewhat disproved which of Dalton's Atomic Theory?
atoms are the smallest particles of matter
atoms combine in simple ratios to make compounds
all matter is made of atoms
atoms of different elements have different properties
37
The majority of these elements are man-made/synthetic...
transition elements
metalloids
Lanthanides
Actinides
38
When subtracting measured values, the answer is expressed ...
C
D
B
A
39
What is true about the Gold Foil Experiment?
protons exist because they pass through gold foil
most of the alpha particles bounced back when they hit foil
atoms were found to be mostly empty space
cathode rays are made of positive alpha particles
40
123.4 m = ?
12340 cm
1.234 dm
12.34 cm
1234 mm
41
5.44 m - 2.6103 m =
2.8 m
2.829 m
2.8297 m
2.83 m
42
How many significant figures are there in 910 meters?
4
3
2
1
43
How many uncertain digits are there in each measurement?
1
2
3
0
44
Choose the chemical property:
conductivity
density
malleability
flammability
45
Choose the chemical change:
salt dissolves in water
ice melts on the road
eggs are hard-boiled
frost forms
46
Which statement is true?
A
C
D
B
47
87,900 m is equal to...
0.879 x 101 m
8.79 x 105 m
8.79 x 104 m
8.79 x 10<span style="font-size: 13.3333px;">-2 </span>m
48
Choose the heterogeneous mixture
italian dressing
glass
tungsten filament in a lightbulb
solid carbon dioxide
49
Why do metals have low specific heat capacities?
a.They do not absorb much energy B4 their temperature ↑ .
a.They are not very dense.
a.They are better at transferring cold toobjects than heat.
a.They never absorb enough energy to reachhigh temperatures.
50
Choose the MIXTURE
hydrogen peroxide
silver
steel alloy
sodium bicarbonate
51
Choose the physical property:
potential to rust
reactivity
soluble in water
combustible
52
Choose the compound
magnesium sulfate
fluorine molecules
ammonia solution
titanium alloy
53
When dividing measured values, the answer is expressed ...
C
A
B
D
54
Democritus ...
believed the smallest matter particles were indivisible
was the first US president with Greek origins.
discovered electrons
poo-pooed the idea of atoms
55
Choose the extensive physical property:
volume
density
color
conductivity
56
6.54 L = ?
6540 dm
6.54 mL
6540 cm3
6.54 cm3
57
Choose the homogeneous mixture
limestone with fossils
blood
chromium molybdenum steel
banana smoothie
58
IN WHICH CASE ARE ALL THE ZEROS SIGNIFICANT FIGURES?
¨0.040500 L
¨4500 mL
¨4050. cm
¨0.0045 g
59
Choose the PURE substance:
carbon dioxide
bronze
tap water
chocolate
60
In the number 4.56 x 10 ³ mL, the 10³ is called the ...
exponent
measurement
base number
coefficient
61
How many uncertain digits does each measurement have?
1
0
2
3
62
See image for question
B
A
C
D
63
Which numbers are considered to be exact (not estimated)
5.00L
759.3 m
0.00673 mm
28 chihuahuas
64
Which is NOT a physical method used to separate a mixture?
filter with funnel and filter paper
neutralization reaction
sift with a collander
evaporation
65
The most reactive group of nonmetals...
oxygen family(group 16)
carbon family (group 14)
nitrogen family (group 15)
halogen family (group 17)
66
4.56 x 10 ³ cm is equal to...
456 cm
4560 cm
0.0456 cm
4560. cm
67
555 mm = ?
555 cm
55.5 cm
0.555 cm
5.55 cm
68
0.009840 L is equal to ...
9.84 x 10 -6 L
98.40 x 10-2 L
0.984 x 10-2 L
9.840 x 10-3 L
69
Aristotle
believed matter was made of small continuous particles
invented the first electronic balance
interfered with Democritus' idea matter is made of atoms
participated in the first Cathode Ray tube experiment
70
All calcium atoms...
have 20 protons and 20 neutrons
have 20 electrons and 20 neutrons
have 20 electrons and 20 protons
have a mass number of 20
71
In the isotope K-41...
41 is the atomic number
19 is the mass number
41 is the average atomic mass
41 is the mass number
72
4.56 x 10 ^-2 cm is equal to...
4560 cm
0.0456 cm
4560. cm
456 cm
73
Convert 39 inches into mm...
B
C
A
74
How many significant figures are there in 3440. centimeters?
4
1
3
2
75
Which best describes the way you plan to get ready for this exam?
I will look over my studyguide in the break before the test.
I plan to use my studyguide, notes, old work, and wiki items
I won't prepare.
I will take time to thoroughly use my studyguide.
76
When an exponent is positive...
the number is less than or equal to 1
the number will have significant zeros
the number is greater than or equal to 1
the number is negative
77
67.029 g + 5.1 g =
72 g
72.12 g
72.1 g
72.129 g
78
See image for question
D
A
B
C

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