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