Quiz about PHSC 100 - Midterm Review

Question 1

What is 0 degrees C in Fahrenheit?

Accepted Answer

32

Answer

18

Answer

45

Answer

212

Question 2

The metric system uses multiples of

Accepted Answer

10

Answer

12

Answer

20

Answer

5

Question 3

The metric system is most commonly used in the USA

Accepted Answer

False

Answer

True

Question 4

Scientists most commonly use the metric system.

Accepted Answer

True

Answer

False

Question 5

Convert 16 kL to L

Accepted Answer

16000 L

Answer

160 L

Answer

1.6 L

Answer

0.016 L

Question 6

What is the first step in a scientific investigation?

Accepted Answer

Identify a problem/ question

Answer

Form a hypothesis

Answer

Communicate with peers

Answer

Form a conclusion

Question 7

What is a cost/ benefit analysis?

Accepted Answer

A method of decision making

Answer

A step in the scientific method

Answer

An investigation into technology

Question 8

What is a controlled variable?

Accepted Answer

Something that you try to keep the same in an experiment.

Answer

Something that is changed by the scientist in an experiment.

Answer

An observation gathered by the senses.

Answer

Something that changes as a result of the experiment.

Question 9

What is a manipulated variable?

Accepted Answer

Something that is changed by the scientist in an experiment.

Answer

An observation gathered by the senses.

Answer

Something that you try to keep the same in an experiment.

Answer

Something that changes as a result of the experiment.

Question 10

What is a responding variable?

Accepted Answer

Something that changes as a result of the experiment.

Answer

Something that is changed by the scientist in an experiment.

Answer

An observation gathered by the senses.

Answer

Something that you try to keep the same in an experiment.

Question 11

Name the correct order of the metric measurements.

Accepted Answer

kilo, hecto, deca, unit, deci, centi, mili

Answer

kilo, hecto, deci, inch, deca, centi, mili

Answer

hecto, kilo, deca, meter, deci, milli, centi

Answer

deca, hecto, mili, unit, deci, centi, kilo

Question 12

What is the scientific theory?

Accepted Answer

An explanation that is accepted because it has a good amount of evidence.

Answer

A hunch about something that has occurred in nature.

Answer

Verifiable laws and that can be proven true.

Question 13

What is an observation?

Accepted Answer

Any information gathered with the senses

Answer

Getting the same results when an experiment is repeated

Answer

Rules for deciding between right and wrong

Answer

Evidence that supports a hypothesis

Question 14

What is matter?

Accepted Answer

A substance that makes up what you see

Answer

A nice thing to say to a friend when they look sad

Answer

Emotions

Answer

Anything that uses your senses

Question 15

Which of the following is NOT an sign of a chemical change?

Accepted Answer

large decrease in solution amount

Answer

color change

Answer

solid produced out of a solution

Answer

gas bubbles released

Question 16

Your mass is different on Earth than it is on the Moon.

Accepted Answer

False

Answer

True

Question 17

What does ' The Law of Conversion of Mass' tell us?

Accepted Answer

You cannot create or destroy matter.

Answer

You cannot create or destroy gravity.

Answer

You cannot create or destroy weight.

Question 18

What is an atom?

Accepted Answer

The smallest unit of matter.

Answer

A chemical for nuclear energy.

Answer

The mixture of multiple elements.

Question 19

A compound forms when

Accepted Answer

two or more elements combine chemically.

Answer

two atoms explode.

Answer

water mixes with air.

Answer

compounds mix with matter.

Question 20

The smallest particle of an element that still has the element's properties is a ____________.

Accepted Answer

atom

Answer

crystal

Answer

molecule

Answer

compound

Question 21

What is a molecule?

Accepted Answer

two or more atoms bonded together

Answer

anything that has mass or volume

Answer

a measure of how much mass is contained in a given volume

Question 22

Which of the following definitions is correct for a solid?

Accepted Answer

matter that has a fixed volume and a fixed shape

Answer

matter that has a fixed figure and a fixed shape

Answer

matter that has a fixed volume and a fixed mass

Answer

matter that has a fixed gravity and a fixed shape

Question 23

Which state of matter has the strongest bonds?

Accepted Answer

solid

Answer

liquid

Answer

gas

Answer

plasma

Question 24

The atomic number is

Accepted Answer

the number of protons in an atom.

Answer

the number of protons plus the number of neutrons in an atom.

Answer

the number of protons plus the number of electrons in an atom.

Answer

the number of neutrons in an atom.

Question 25

The mass number is

Accepted Answer

the number of protons plus the number of neutrons in an atom.

Answer

the number of protons plus the number of electrons in an atom.

Answer

the number of protons in an atom.

Answer

the number of neutrons in an atom.

Question 26

When an atom gains or loses an electron, it becomes a(n)

Accepted Answer

ion.

Answer

molecule.

Answer

isotope.

Answer

quark.

Question 27

Atoms with the same number of protons but different number of neutrons are

Accepted Answer

isotopes.

Answer

molecules.

Answer

ions.

Answer

quarks.

Question 28

The largest particle in an atom is a(n)

Accepted Answer

neutron

Answer

proton

Answer

electron

Question 29

At atoms is mostly made of empty space.

Accepted Answer

True

Answer

False

Question 30

Elements in the same column of the periodic table have the same number of ______________.

Accepted Answer

valence electrons

Answer

neutrons

Answer

atoms

Answer

protons

Question 31

Which group contains the most reactive metals?

Accepted Answer

alkali metals

Answer

transition metals

Answer

post-transition metals

Answer

noble gas metals

Question 32

Noble Gases are the least reactive elements.

Accepted Answer

True

Answer

False

Question 33

Any element with an atomic number above 92 is man-made and only has radioactive isotopes.

Accepted Answer

True

Answer

False

Question 34

Electrons in the outer energy level of an atom are called valence electrons.

Accepted Answer

True

Answer

False

Question 35

What is a covalent bond?

Accepted Answer

Two atoms share one or more pairs of outer-shell electrons.

Answer

When electrons are shared but shared unequally.

Answer

When electrons are shared in a sea of electrons among atoms.

Answer

When two atoms bond when one or more electrons are given to one atom by another atom.

Question 36

An endothermic reaction takes less energy to break bonds in the reactants than is released when new bonds form in the product.

Accepted Answer

False

Answer

True

Question 37

Combustion reactions absorb energy.

Accepted Answer

False

Answer

True

Question 38

How many atoms are in one molecule of glucose? The chemical formula for glucose is C₆H₁₂O₆.

Accepted Answer

24

Answer

12

Answer

6

Answer

18

Question 39

How does a catalyst affect the reaction rate?

Accepted Answer

It speeds it up.

Answer

It slows it down.

Answer

It does not affect the rate.

Question 40

Activation energy is the energy required to keep a chemical reaction going.

Accepted Answer

False

Answer

True

Question 41

The reaction rate can be sped up by:

Accepted Answer

Increasing the surface area of the reactants

Answer

Decreasing the temperature

Answer

Decreasing the concentration of the reactants

Answer

Removing a catalyst

Question 42

The dissolving rate can be sped up by:

Accepted Answer

Increasing the temperature

Answer

Decreasing the temperature

Answer

Keeping the substances as still as possible

Answer

Decreasing the surface area of the solute

Question 43

Some substances are insoluble in water.

Accepted Answer

True

Answer

False

Question 44

Compounds called indicators change color when acids come into contact with them.

Accepted Answer

True

Answer

False

Question 45

The strength of acids and bases is measure by the ______.

Accepted Answer

pH scale

Answer

concentration scale

Answer

neutral ion scale

Answer

aB scale

Question 46

The daughter product of beta decay has _______.

Accepted Answer

the same mass number as the original.

Answer

the same chemical symbol as the original.

Answer

the same atomic number as the original.

Answer

a mass number 4 less than the original.

Question 47

The daughter product of alpha decay has _______.

Accepted Answer

a mass number 4 less than the original.

Answer

the same chemical symbol as the original.

Answer

the same atomic number as the original.

Answer

the same mass number as the original.

Question 48

The daughter product of gamma decay has _______.

Accepted Answer

the same chemical symbol as the original.

Answer

an atomic number 4 less than the original.

Answer

a mass number 2 less than the original.

Answer

a mass number 4 less than the original.

Question 49

The atom is made up of 3 smaller particles: protons, neutrons, and electrons.

Accepted Answer

True

Answer

False

Question 50

The center of an atom, containing the protons and neutrons is called:

Accepted Answer

the nucleus

Answer

the electron

Answer

the proton pot

Answer

the middle

Question 51

Radiometric dating can give us an accurate date for rocks.

Accepted Answer

False

Answer

True

Question 52

The neutron has an electrical charge.

Accepted Answer

False

Answer

True

Question 53

An _______ is a collection of atoms that all have the same number of protons.

Accepted Answer

element

Answer

atomic number

Answer

mass number

Answer

isotope

Question 54

An atom with a nucleus that is not stable is called a radioactive isotope.

Accepted Answer

True

Answer

False

Question 55

What type of radiation requires a layer of lead to stop it?

Accepted Answer

Gamma rays

Answer

Alpha particles

Answer

Beta particles

Answer

None of them

Question 56

The three types of radiation particles are:

Accepted Answer

Alpha particles, Beta particles, and Gamma rays

Answer

Alpha rays, gamma particles, and Omega particles

Answer

Alpha rays, Beta particles, and Grandma rays

Answer

Carbon 14, Uranium, and Plutonium

Question 57

The three types of radiation particles are:

Accepted Answer

Alpha particles, Beta particles, and Gamma rays

Answer

Alpha rays, gamma particles, and Omega particles

Answer

Alpha rays, Beta particles, and Grandma rays

Answer

Carbon 14, Uranium, and Plutonium

Question 58

A radioactive isotope has a half-life of 5 hours. If a scientist has 30 grams of the isotope, how much is left after 15 hours?

Accepted Answer

3.75 grams

Answer

1.875 grams

Answer

7.5 grams

Answer

There is no way to tell how much will be left.

Question 59

Which of the following atoms are isotopes?

Accepted Answer

14C and 12C

Answer

14C and 14N

Answer

14C and 12N

Answer

14C and 144Ce

Question 60

The process by which a large nucleus is split into smaller nuclei is called ______.

Accepted Answer

Nuclear fission

Answer

Critical mass

Answer

Nuclear fusion

Answer

Spectroscopy

Question 61

_____ is the process by which two or more small nuclei fuse to make a bigger nucleus.

Accepted Answer

Nuclear Fusion

Answer

Nuclear Fission

Answer

Critical Mass

Answer

Absolute Magnitude

Question 62

Is sunlight a renewable source of energy?

Accepted Answer

Yes, it's renewable

Answer

No, it's non-renewable

Question 63

Is nuclear power a renewable source of energy?

Accepted Answer

No, it's non-renewable

Answer

Yes, it's renewable

Question 64

The kinetic energy that comes from moving electrons is called ___________________.

Accepted Answer

Electrical energy

Answer

Mechanical energy

Answer

Chemical energy

Answer

Thermal energy

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