How are science and technology related?

Advances in science lead to advances in technology 🔁

Which of the following statements about ice is true?

Water molecules move from their fixed position

No definite shape or definite volume

Ionization energies tend to _______.

Increases from left to right across a period

Which statement is NOT true about the elements fluorine (9), chlorine (17), and iodine (53)?

They are similar to noble gases

Water is a compound because it what?

Can’t be broken down into simpler substances, Always has two hydrogen atom for each oxygen atom

Typically, atoms gain and lose electrons to achieve ______.

A stable electron configuration

Why are scientific models important?

Help visualize things that are very large, or very small

In a polar covalent bond,

Electrons are not shared equally between atoms

What is an unknown substance that cannot be broken down into simpler substances?

An element, Made of one kind of atom

A mixture can be classified as a solution, suspension, or colloid based on what?

Size of it’s largest particles

J.J. Thomson‘s experiments provided evidence that an atom ______.

Contains negatively charged particles

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Pre Ap Physical Science

105 termsStudBud Administration117 plays

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Questions 105

Answers

1
What is a statement that summarizes a pattern found in nature?
Scientific law
Scientific theory
Hypothesis
Fact
2
Ninety-nine percent of all the matter that can be observed in the universe exists as _______.
Solids
Gases
Plasmas
Liquids
3
During which phase change does the arrangement of water molecules become more orderly?
Freezing
Melting
Condensing
Boiling
4
If the number of particles of gas is increase the pressure will _______.
Remain constant
Increase
Decrease
Cause a decrease in the kinetic energy of the particles
5
What is a physical or mental representation of an object of an event?
Theory
Hypothesis
Scientific law
Model
6
Which of the following is malleable?
Pottery
Gold
Glass
Ice
7
How are science and technology related?
Technology is a branch of natural science
Science and technology are not related
Science is a branch of technology
Advances in science lead to advances in technology 🔁
8
Which of the following statements about ice is true?
Water molecules lose energy
The temperature of the ice increases as it melts
Water molecules move from their fixed position
Energy flows from the ice to its surroundings
9
An element has a fixed composition because it comtains only one type of ______.
Atom
Element
Gases
Molecule
10
How do scientists communicate the results of investigations?
I exchanging e-mails
By giving talks at scientific conferences
All the above
By publishing articles in scientific journals
11
What is the unit for pressure?
Ounces
Weight
Kilopascal
Pounds
12
What is a system of knowledge and methods used to find that knowledge?
Curiosity
Technology
Measurement
Science
13
A gas has
A definite shape but no definite volume
A definite volume and definite shape
A definite volume but no definite shape
No definite shape or definite volume
14
What is a mixture of two or more elements, at least one of which is a metal?
Polyatomic
Crystal
Alloy
Molecule
15
What is the result of a force over an area?
Volume
Temperature
Pressure
Mass
16
Ionization energies tend to _______.
Increases from left to right across a period
Increase from the top of a group to the bottom
Decreases from the bottom of a group to the top
Decrease from left to right across a period
17
Natural science is divided in life science, Earth and space, and ________.
Physical science
Geometry
Physics
Biology
18
Which statement is NOT true about the elements fluorine (9), chlorine (17), and iodine (53)?
They react easily with metals
They are all nonmetals
They are similar to noble gases
They are all halogens
19
Water is a compound because it what?
Can’t be broken down into simpler substances
Is made of water atoms joined together
Because you drink it
Always has two hydrogen atom for each oxygen atom
20
Measuring ______ can be used to test the purity of some substance.
Density
Volume
Mass
Weight
21
Typically, atoms gain and lose electrons to achieve ______.
Ionization
An exchange of energy
A stable electron configuration
Vaporation
22
A solid that forms and seperates from a liquid mixture is a _________.
Colloid
Metal
Precipitate
Element
23
The type of graph used to show how a part of something relates to the whole
Circle graph
Direct proportion
Bar graph
Line graph
24
What is a material that is malleable and conducts electricity well?
Motor oil
Ice
Wood
Metal
25
Which law states that the volume of a gas is directly proportional to its temp in kelvin?
Einstein’s law
Charle’s law
Bose’s law
Boyle’s law
26
Why are scientific models important?
They never change
They make it harder to understand things
They prove scientific theories
Help visualize things that are very large, or very small
27
In a polar covalent bond,
Electrons are transferred between atoms
Electrons are not shared equally between atoms
Electrons are shared equally between atoms
A cation is bonded to an anion
28
Which of the following is a pure substance?
Colloid
Compound
Element
Solution
29
Which of the following factors affects the pressure of an enclosed gas?
All of the above
Temperature
Number of particles
Volume
30
Forces of attraction limit the motion of particles most in _______?
A liquid
A gas and a liquid
A solid
A gas
31
How is 0.00069 written in scientific notation?
6.9•10^4
6.9•10^-4
69•10^-5
0.69•10^-3
32
What are the two main areas of physical science?
Chemistry
Physics
Biology
Zoology
33
What is the state of matter that exists only at extremely low temperatures is called ______.
Solid
Plasma
Liquid
Bose-Einstein Condensate
34
What is the region in which an electron is most likely to be found?
Ion
Electron
Orbital
Sodium
35
The formula for magnesium chloride is MgCl2. What must the charge on the chloride ion be?
0
2-
2+
1-
36
What change occurs when a material changes shape or size but not composition?
Physical change
Chemical change
Density change
Shape change
37
Which of the following has the highest viscosity?
Water
Milk
Corn syrup
Orange juice
38
What is an unknown substance that cannot be broken down into simpler substances?
A compound
An element
An element
Made of one kind of atom
39
Which of the following will cause a decrease in gas pressure in a closed container?
Adding water
Adding more gas
Lowering the temperature
Reducing the volume
40
What properties can only be observed when substances are changing into different substances?
Color
Odor
Physical
Chemical
41
What is the phase change in which a substance changes from a solid to a liquid?
Melting
Condensation
Freezing
Sublimation
42
A mixture can be classified as a solution, suspension, or colloid based on what?
Size of it’s smallest particles
Number of particles it contains
Color of its particles
Size of it’s largest particles
43
Which element is found in most of the compounds in your body except for water?
Carbon
Potassium
Iodine
Iron
44
Measurement must include both a number and a?
Word
Unit
Hashtag
$
45
Atoms of the most reactive elements tend to have what?
No valence electrons
One or seven valence electrons
Four or five valence electrons
Eight valence electrons
46
What is an organized plan for gathering organizing and communicating information called ?
Scientific method
Scientific theory
Scientific law
Chemistry
47
What substance changes it’s volume when when it moves containers?
Liquid
Solution
Gas
Solid
48
Which of the following is unique for any given element?
Mass of a neutron
# of neutrons
The charge of the electrons
# of protons
49
Which of the following phase changes is an endothermic change?
Condensation
Freezing
Deposition
Vaporation
50
J.J. Thomson‘s experiments provided evidence that an atom ______.
Is the smallest particle of matter
Has a positive charge
Contains negatively charged particles
Has a negative charge
51
If the volume of a container is reduced by half the pressure will increase by ______.
50%
100%
200%
75%
52
What is the heat of fusion?
The temperature that water freezes
The temperature that water boils
The temperature that water evaporates
The temperature that water melts
53
Rust forms because iron is _____ _____ in the presence of oxygen and water.
Doesn’t react
Highly reactive
Barely reactive
All of the above
54
Which of the following is a heterogeneous mixture?
Stainless steel
Water in a swimming pool
Sugar water
A jar of mixed nuts
55
What is a type of bond that holds cations and anions togethe?
Ionic bond
Polar bond
Anion
Nonpolar bond
56
Boyles law states that the volume of a gas is inversely proportional to its pressure if the ___
Temperature and number of particles are constant
Temperature reaches absolute zero
Number of particles decreases
Temperature and number of particles are doubled
57
What type of change occurs when water changes from a solid to a liquid.
A phase change
A physical change
An irreversible change
A phase change and a physical change
58
Who provided evidence for the existence of a nucleus in an atom?
Democritus
John Dalton
Ernest Rutherford
J.J. Thomson
59
Which of the following is not part of John Dalton’s atomic theor?
All elements are composed of atoms
All atoms of the same element have the same mass
Atoms contain subatomic particles
A compound contains atoms of more than one element
60
What is a substance that is made one kind of atom?
Homogeneous mixture
Element
Compound
Solution
61
What is a mixture that appears to contain only one substance?
Heterogeneous mixture
Compound
Element
Homogeneous mixture
62
During an ______ change, a system absorbs energy from its surrounding.
Endothermic
Deposition
Exothermic
Kinetic
63
In which step of the scientific method is information obtained through the sences?
Draw conclusions
Analyzing data
revising a hypothesis
Make observations
64
A type of bond in which two atoms share a pair of valence electrons is a ______.
Metallic bond
Covalent bond
Chemical bond
Ionic bond
65
When two atoms of the same nonmetal react, they often form a ________.
Polar bond
Diatomic bond
Polyatomic bond
Ioni bond
66
What is the SI base unit for temperature?
Fahrenheit
Celsius
Kelvin
Chili
67
Which element is found in nature only in compounds?
Helium
Sodium
Oxygen
Nitrogen
68
Why are peer reviewes important?
Data is checked for accuracy
All of the above
Scientists receive comments and suggestions from others
Scientists receive questions and criticism from their peers
69
Which of the following materials is useful for making molds because it has a low melting point?
Wood
Wax
Metal
Clay
70
If the particles in a mixture scatter light, the mixture is either a _______ or a ________.
Suspension, colloid
Compound, mixture
Elements, compound
Colloid, suspension
71
Which of the following sentences is true about scientific theories?
Scientific theories are never proven
Scientific theories become hypotheses
Scientific theories summarize patterns found in nature
Scientific theories become scientific laws
72
What are the two most reactive groups of elements?
Noble gases, alkaline earth metals
Halogens, alkali metals
All of the above
Alkali metals, halogens
73
What is a tiny piece of matter that cannot be divided?
Element
Molecules
Electron
Atom
74
What is the phase change in which a substance changes from a gas directly to a solid?
Deposition
Sublimation
Condensation
Vaporation
75
Which of the following is a chemical change?
Water breaking down into hydrogen and oxygen
Ice melting
Ice being carved
Water boiling
76
What is the most important safety rule?
Never do experiments that involve flames or hot objects
Never work with chemicals
Always use unbreakable glassware
Always follow instructions and the textbook directions
77
How do scientist who speak different languages make their data understandable to one another?
They all use different systems of measurement
They all use SI
They communicate through a universal translator
They all must speak French
78
What is the phase change in which a substance changes from a liquid to a gas?
Vaporation
Sublimation
Deposition
Condensation
79
Matter that has a definite volume but no definite shape is a _______.
Solid
Liquid
Gas
Plasma
80
Group 7A of the periodic table contains the ______.
Most reactive nonmetals
Most reactive metals
Least reactive nonmetals
Least reactive metals
81
Mendeleev arranged the know chemical elements in a table according to increasing ______.
Number of protons
Atomic number
Mass
Number of electrons
82
Which of the following most accurately represents John Dalton’s model of the atom?
A tiny, solid sphere with a predictable mass
A hollow shere with a dense nucleus
A tiny, solid sphere with an unpredictable mass
A sphere that is hollow throughout
83
The pattern of repeating properties of elements revealed in the periodic table is known as ___.
Newton’s law
Atomic law
Periodic law
Mendeleev’s law
84
During a phase change, the temperature of a substance _________.
Increases or decreases
Does not change
Increases
Decreases
85
To keep from reacting, some highly reactive elements are stored in ______.
Helium
Oxygen
Water
Argon
86
What is a material that contains three elements joined in a fixed proportion?
Solution
Atom
Compound
Mixture
87
Which of the following is not a clue that a chemical change has occurred?
Production of a gas
Change in color
Change in shape
Formation of a precipitate
88
Flamability is a material‘s ability to burn in the presence of what?
Hydrogen
Carbon dioxide
Oxygen
Nitrogen
89
The formation of an ionic bond involves the _____.
Transfer of electrons
Transfer of protons
Transfer of neutrons
Sharing of electrons
90
Computers are an example of a _________ that help people solve problems.
Technological
Physical
Science
Technology
91
Which of the following is an example of a safe laboratory procedure?
Eating or drinking from laboratory glassware
Testing an odor by directly and hailing
Touching hot objects with your bare hands
Tying back long hair and a loose clothing
92
What are the building blocks of all matter?
Magnetic fields
Kinetic and potential energy
Forces
Atoms
93
A __________ is a statement that summarizes a pattern found in nature.
Element
Scientific law
Scientific theory
Scientific question
94
What do scientists use to predict the locations of electrons in atoms?
Probability
Algebra
Geometry
Ratios and probability
95
Moving from left to right across a period, which of the following increases by exactly one?
Atomic #
Mass #
Isotope #
Atomic mass unit
96
Collisions of helium atoms with the walls of a closed container cause ________.
Condensation
Gas pressure
An overall loss of energy
A decrease in volume
97
What is the phase change that is the reverse of condesation?
Melting
Vaporation
Freezing
Sublimation
98
The standard on which the atomic mass unit is based in the mass of a ______.
Carbon-12 atom
Neutron
Proton
Chlorin-35 atom
99
What happens when the data in an investigation do not support the original hypothesis?
The data is altered to support the original hypothesis
The hypothesis is revised
The data must be incorrect and is thrown away
The scientist gives up and starts a new investigation
100
Which of the following changes is an exothermic change?
Deposition
Melting
Vaporation
Sublimation
101
What is the phase change in which a substance changes directly from a solid to a gas?
Melting
Deposition
Vaporation
Sublimation
102
Which of the following is not a pure substance?
Oxygen
Water
Carbon dioxide
Milk
103
Raising the temperature of a gas will increase its pressure if the volume of the gas _______.
Is constant, but the number of particles is reduced
Is increased, but the number of particles is constant
And the number of particles are increased
And the number of particles are constant
104
What method can be used to separate parts of a liquid when it can pass through a filter?
Filtration
Straining
Distillation
Screening
105
Pure substances are either _____ or _____.
Colloid , suspension
Elements, compounds
Atoms,halogens
Compounds, elements

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