Semester Test

Question 0

The shape of an Apple is a

Answer 0

Physical property

Question 1

Three examples of physical change are?

Answer 1

Boiling of water cutting a wire and crumpling a piece of paper

Question 2

When a log burns in a fire…

Answer 2

A chemical change occurs

Question 3

When 2 or more substances are combined so each substance can be separated by physical means the result is a

Answer 3

Mixture

Question 4

Matter that has a definite volume and a definite shape is a

Answer 4

Solid

Question 5

Matter in which atoms are tightly held in place is a

Answer 5

Solid

Question 7

A gas like mixture with no definite volume or shape is made up of positively and negatively charged particles that produce their own light and heat is called a

Answer 7

Plasma

Question 8

Matter with no definite volume and no definite shape is a

Answer 8

Gas

Question 9

Matter that has a definite volume but no definite shape is a

Answer 9

Liquid

Question 10

Matter in which the particles are free to move in all directions until they have spread evenly throughout their container is a

Answer 10

Gas

Question 11

Most matter ____ when heated

Answer 11

Expands

Question 12

The theoretical point at which all molecular motion stops is called

Answer 12

Absolute zero

Question 13

The amount of energy it takes to change a material from a liquid to a gas is called the heat of

Answer 13

Vaporization

Question 14

According to ____ if you decrease the volume of a container of gas and hold the temp constant the pressure of the gas will rise

Answer 14

Boyle’s law

Question 15

According to ____ the volume of gas increases with increasing temp as long as pressure does not change

Answer 15

Charles law

Question 16

The most common state of matter in the universe is

Answer 16

Plasma

Question 17

Increasing what raises the boiling point of a liquid

Answer 17

Pressure

Question 18

A fluids resistance to flow is called

Answer 18

Viscosity

Question 19

As the temp of a gas increases the volume of a gas will what if the pressure remains the same

Answer 19

Increase

Question 20

As the volume of a gas increases the pressure of the gas will what if the temp remains the same

Answer 20

Decrease

Question 21

Each inner energy level of an atom has a maximum Number of what it can hold

Answer 21

Electrons

Question 22

Dot diagrams are used to represent what

Answer 22

Isotopes

Question 23

Particles of matter that make up protons and neutrons are called

Answer 23

Quarks

Question 24

A chemical symbol represents the _____ of an element

Answer 24

Name

Question 25

Horizontal rows on the periodic table are called

Answer 25

Periods

Question 26

Atoms of the same element with different Numbers of neutrons are called

Answer 26

Isotopes

Question 27

A particle that moves around the nucleus is a

Answer 27

Electron

Question 28

Elements that are gases are brittle and are poor conductors at room temp are

Answer 28

Nonmetals

Question 29

A certain atom with 26 protons and electrons and 30 neutrons would have an atomic mass of

Answer 29

56

Question 30

A type of radioactive particle that can be stopped by a sheet of paper is the

Answer 30

Alpha particle

Question 31

The most penetrating type of radiation is the

Answer 31

Gamma ray

Question 32

A helium nucleus with 2 protons and 2 neutrons is called

Answer 32

Alpha particle

Question 33

Negatively charges particles emitted from a nucleus at a high speed are

Answer 33

Beta particles

Question 34

He process by which nuclei having low masses are united to form nuclei with larger masses is

Answer 34

Nuclear fusion

Question 35

The three types of nuclear radiation in increasing order of penetrating power are

Answer 35

Alpha beta gamma

Question 36

Both a fusion reaction and a fission reaction

Answer 36

Produce energy

Question 37

Neutrons released Ina fission reaction can strike other nuclei and cause

Answer 37

A chain reaction

Question 38

The process by which iodine particles change directly to gas without first becoming a liquid is called

Answer 38

Sublimation

Question 39

Elements that form salts by combining with metals are

Answer 39

Halogens

Question 40

Different forms of the same element that have different properties bc of different atoms arrangements are called

Answer 40

Allotropes

Question 41

An allotrope of carbon that is hard and is often used in jewelry is

Answer 41

Diamond

Question 42

A chemical family whose members exist as reactive diatomic molecules in the gaseous phase is the

Answer 42

Halogens

Question 43

The elements in groups 3-12 of the periodic table are the

Answer 43

Transition metals

Question 44

A family of elements that has 2 electrons in its outer energy level is the

Answer 44

Alkaline earth metals

Question 45

Metals can be used as a wire bc they are

Answer 45

Metallic

Question 46

Bromine is the only halogen and nonmetal that is normally a

Answer 46

Liquid

Question 47

The only metal that is a liquid at room temp is

Answer 47

Mercury

Question 48

All synthetic elements are

Answer 48

Radioactive

Question 49

The noble gases are in

Answer 49

Group 18

Question 50

Elements that lie along the stair step line of the periodic table are

Answer 50

Metalloids

Question 51

The appearance of solid metals can be described as

Answer 51

Shiny

Question 52

A family of elements that contains the most reactive metals is the

Answer 52

Halogens

Question 53

In a chemical formula the number of each type of atom in the compound is shown by Numbers called

Answer 53

Subscripts

Question 54

A group of covalently bonded atoms that acts together as one charged atom is a

Answer 54

Poly atomic ion

Question 55

He elements that make up a compound and the exact number of atoms of each element in a unit of the compound can be shown in a

Answer 55

Chemical formula

Question 56

A chemical bond that occurs when atoms share electrons is a what bond

Answer 56

Covalent

Question 57

The __ tells you how any electrons an atom must gain or lose or share to become stable

Answer 57

Oxidation number

Question 58

The sum if oxidation numbers in a neutral compound must always equal

Answer 58

Zero

Question 59

The oxidation number of an atom is shown with a

Answer 59

Superscript

Question 60

How many electrons are needed I'm the outer levels of most atoms for the atoms to be chemically stable

Answer 60

8

Question 61

What kind of bond is formed when and equal exchange of electrons occurs

Answer 61

Ionic

Question 64

What is another name for a homogeneous mixture

Answer 64

Solution

Question 65

What is the name of the compound with the formula NaCl

Answer 65

Sodium chloride

Question 66

Why do noble gases not form compounds readily

Answer 66

Their outer energy levels are completely filled with electrons

Question 67

What is the name of a binary compound made up of lithium and chloride

Answer 67

Lithium chloride

Question 68

What is the correct formula for magnesium nitrate

Answer 68

Mg(NO3)2

Question 69

What charge is phosphate in K3PO4

Answer 69

1+

Question 70

What is the correct formula for magnesium oxide

Answer 70

MgO

Question 71

A what chemical equation has the same number of atoms of each element on each side of the equation

Answer 71

Balanced

Question 72

Each substance on the left of the arrow in a chemical equation is a

Answer 72

Reactant

Question 73

The energy required to break the original bonds is less than the energy releases when new bonds form in a

Answer 73

Exergonic

Question 74

If the heat must be added to a chemical reaction for the reaction to take place the reaction is

Answer 74

Endothermic

Question 75

Which of the following could represent a decomposition reaction

Answer 75

Compound = element + element

Question 76

In a chemical equation the symbol that means dissolved In water is

Answer 76

(aq)

Question 77

When one element replaces another element in a compound the reaction is a

Answer 77

Single displacement reaction

Question 78

A substance that speeds up a chemical reaction without being permanently changed itself is a

Answer 78

Catalyst

Question 79

Each substance to the right of the arrow in a chemical equation is a

Answer 79

Product

Question 80

Substances that prevent or slow down chemical reactions are called

Answer 80

Inhibitor

Question 81

A chemical reaction in which heat energy is released is

Answer 81

Exothermic