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Physical science review
Physical science review
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Review quiz for physical science class
Flashcards
55 cards
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Practice quiz
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Questions
55
Answers
1
A compound is _____________________.
2 or more different substances that are not joined
pure substance made of only a single type of atom
made of a single atom
2 or more elements that are bound (joined) together
2
What is the velocity of a dog that moves 4 m south in 4 seconds?
1 m/s
1 m/s south
16 m/s
16 m/s south
3
Number of protons in oxygen
8
18
65
4
4
Number of electron shells in hydrogen
2
1
8
7
5
A chemical property is
detail that can only be observed as object is changed
flammability
density
detail that can be observed without changing the object
6
The acceleration of a car was -5 m/s2. What was it doing?
Speeding up
Probably going too fast
Slowing down
Not moving
7
An element is __________________________
pure substance made of only a single type of atom
made of different types of atoms
a large mammal with a trunk
every atom with the same number of protons
8
100 m = _________ km
1
100
0.1
10
9
A pure substance is ___________________________
matter that is made of only one thing
two or more things that are not chemically joined
either an element or a compound
super easy to separate
10
When a chemical change happens,
you may see lights or smell weird new odors
a great deal of heat may be released
substance(s) change into new substances with new properties
you still have what you started with
11
Bond where electrons are completely given away
Nuclear
Metallic
Ionic
Covalent
12
Liquid turns to solid =
melting
evaporation
condensation
freezing
13
Kinetic theory states that:
Matter only moves when it is liquid, gas or plasma
As more energy is absorbed by particles, they move faster
At 32 F, water molecules completely stop moving
Matter is always moving
14
Which type of diagram shows all of the electrons in an atom?
Richland
Bohr
Full
Lewis
15
What is an hypothesis?
Educated prediction about result of an experiment
Result of an experiment
What the scientist measures
What the scientist manipulates
16
A mixture is _____________________________
matter that is made of only one thing
only made after a chemical change
highly flammable
2 or more substances combined together
17
35 mm = ___________ m
0.0035
0.35
0.035
3.5
18
The matter inside the balloons is in the _________ phase.
liquid
plasma
solid
gas
19
Which type of diagram shows only valence electrons?
incomplete
orbital
Lewis
Bohr
20
Bond where electrons are shared between non-metals
Metallic
Nuclear
Covalent
Ionic
21
Physical science is a mix of
chemistry and physics
biology and chemistry
biology and physics
chemistry and phys ed
22
Matter is anything that...
Is Yellow
Has mass and takes up space
Takes up space
Has mass
23
What is an independent variable?
Question scientist is trying to answer
What the scientist changes
The Y axis on a graph
What the scientist measures
24
Define technology
Anything that is found in nature
Computers
Something humans made to accomplish a task
A scientific discovery
25
1) Open wrapper. 2) Put Snickers in mouth. 3) Bite. 4) Chew. 5) Swallow: Example of
Procedure
Data
Hypothesis
Question
26
Gas turns to liquid =
Exothermic
Condensation
Sublimation
Evaporation
27
Number of protons in hydrogen
3
2
4
1
28
Bond where electrons are passed between metal atoms
Metallic
Nuclear
Covalent
Ionic
29
All atoms of the same element have equal numbers of _____________.
Neutrons
Protons
Photons
Electrons
30
What is the speed of a cat that moves 10 m in 2 seconds?
5 m/s
5 m
20 m
20 m/s
31
Number of valence electrons in carbon
8
4
2
6
32
A physical property is
mass
detail that can only be observed as the object is changed
detail that can be observed without changing the object
reactivity
33
Solid turns to liquid =
melting
evaporation
reversible
freezing
34
Number of electron shells in aluminum
3
5
1
7
35
Density is
how heavy something is
matter in a certain amount of space
calculated using volume/mass
calculated using mass/volume
36
Electrons have
Positive charge
No charge
Negative charge
More mass than a proton
37
Solid turns to gas =
Sublimation
Freezing
Melting
Condensation
38
23 m = ________________ cm
2300
230
2.3
0.23
39
Which of these are examples of technology?
iPhone
Laptop
Pen
Toothpick
40
Force joining two or more atoms together
Bond
Balanced
Glue
Gravity
41
The density of a block with a volume of 20 cm3 and a mass of 100 g is
20000 g/cm3
200 g/cm3
5 g/cm3
50 g/cm3
42
Number of valence electrons in sodium
7
3
8
1
43
This is matter in the _______________ state.
liquid
solid
gas
plasma
44
Neutrons have
No charge
Negative charge
Positive charge
Less mass than electrons
45
55 kg = _________ g
550
5.5
55000000
55000
46
What is a dependent variable?
Best guess about outcome of the experiment
What the scientist measures
What the scientist manipulates
Question scientist is trying to answer
47
Properties of covalent compounds
low melting point
soft
hard
high melting point
48
14 km = ______________ mm
140
1.4
14000
14000000
49
This is matter in the __________________ phase.
liquid
gas
plasma
solid
50
Liquid turns to gas =
Condensation
Endothermic
Evaporation
Melting
51
Protons have
Positive charge
Positive and negative charge
Negative charge
No charge
52
Number of valence electrons in helium
2
10
8
1
53
Number of protons in iron
53
26
5
93
54
Mass is
different on Earth and Mars
how much matter is in an object
how many protons are in an atom
the effect of gravity on an object
55
Properties of ionic compounds:
low melting point
easy to shatter
hard
high melting point
