Physical Science Mid-Term Review

Question 1

Which is an example of a homogeneous mixture?

Accepted Answer

chocolate pudding

Question 2

What are 2 characteristics of matter?

Accepted Answer

volume and mass

Question 3

When liquid water freezes, the average kinetic energy of its molecules

Accepted Answer

decreases

Question 4

Elements in the same group have the same

Accepted Answer

properties

Question 5

Which group of elements is the most nonreactive?

Accepted Answer

Group 8A

Question 6

The particles of a solid vibrate

Accepted Answer

in fixed locations

Question 7

A system of knowledge and the methods you use to find that knowledge is

Accepted Answer

science

Question 8

True or False: Every atom of a given element has the same number of protons.

Accepted Answer

True

Question 9

How are science and technology related?

Accepted Answer

Science expands knowledge, technology applies it.

Question 10

What are the 2 categories of PURE substances?

Accepted Answer

elements and compounds

Question 11

True or False: A mixture can be classified based on the size of its smallest particles.

Accepted Answer

False

Question 12

These elements are good conductors of heat and electricity.

Accepted Answer

metals

Question 13

Protons, electrons, and neutrons are all

Accepted Answer

subatomic particles

Question 14

Elements in the same period have the same

Accepted Answer

number of energy levels

Question 15

A mixture whose parts are noticeably different from one another.

Accepted Answer

heterogeneous

Question 16

How do you calculate the number of neutrons in an atom?

Accepted Answer

mass - atomic = neutrons

Question 17

What type of change occurs when lighting a candle?

Accepted Answer

Both Chemical and Physical

Question 18

True or False: An element is a substance that cannot be broken down into simpler substances.

Accepted Answer

True

Question 19

The state of matter in which a material has an indefinite shape and indefinite volume.

Accepted Answer

gas

Question 20

Density =

Accepted Answer

mass divided by volume

Question 21

Liquids have a definite _________ and indefinite _________.

Accepted Answer

volume, shape

Question 22

What are the building blocks of all matter?

Accepted Answer

atoms

Question 23

A compound is

Accepted Answer

all of the above

Question 24

A material's ability to allow heat or electricity to flow is called

Accepted Answer

conductivity

Question 25

The energy an object (or a molecule) has due to its motion

Accepted Answer

Kinetic energy

Question 26

The elements that form a bridge between the left side and the right side of the periodic table.

Accepted Answer

transition metals

Question 27

Which is a reversible physical change?

Accepted Answer

freezing water

Question 28

Elements within a group have the same number of _______________.

Accepted Answer

valence electrons

Question 29

True or False: A scientific law is a statement that summarizes a pattern found in nature.

Accepted Answer

True

Question 30

Which is an example of a chemical change?

Accepted Answer

All of the above.

Question 31

When in an excited state, electrons tend to _____________.

Accepted Answer

move away from the nucleus

Question 32

Which subatomic particle is negative?

Accepted Answer

electron

Question 33

True or False: All elements in group 8A have 8 valence electrons.

Accepted Answer

False

Question 34

Which of these does the modern atomic theory follow?

Accepted Answer

The Electron Cloud Model

Question 35

Which two groups are the most reactive?

Accepted Answer

1A, 7A

Question 36

During an ____________ phase change, the system absorbs energy from its surroundings.

Accepted Answer

endothermic

Question 37

T or F: 6 Phase Changes: melting, freezing, vaporization, condensation, sublimation, deposition

Accepted Answer

True

Question 38

The temperature at which a substance boils is its

Accepted Answer

boiling point

Question 39

True or False: You should study for the mid-term.

Accepted Answer

True

Question 40

True or False: The modern periodic table is arranged by increasing atomic number.

Accepted Answer

True

Question 41

Within Group 1A, the most reactive elements are found

Accepted Answer

at the bottom

Question 42

Your mid-term will be given on

Accepted Answer

Thursday

Question 43

True or False: All the important rules of nature have already been discovered.

Accepted Answer

False

Question 44

Dry ice changes directly from a solid to a gas. What is this change called?

Accepted Answer

sublimation

Question 45

True or False: A scientific law can be disproven with evidence.

Accepted Answer

False

Physical Science Mid-Term Review

Questions 45

Physical Science Mid-Term Review

Questions 45