Chemistry Final 2

Front 1

Light and heat are two forms of _____

Back 1

Energy

Front 2

A kilogram is a unit of ______

Back 2

Mass

Front 3

_____ is a measure of the gravitational force exerted on an object.

Back 3

gravity

Front 4

The _____ of water is about 1 gram per milliliter.

Back 4

Density

Front 5

_____ is the SI unit used to count the number of atoms.

Back 5

Mole

Front 6

Energy can be measured in _____

Back 6

Joules

Front 7

The same experiment is often performed several times to increase the ______ of the measurement.

Back 7

Accuracy

Front 8

A liter is a larger unit of ______ than a milliliter.

Back 8

volume

Front 9

Oil and vinegar is an example of a ______ of substances.

Back 9

Mixture

Front 10

Color is an example of a _________.

Back 10

Physical property

Front 11

The transformation of a substance into another substance is called _______.

Back 11

Chemical change

Front 12

The _______ scale is used for observations that are large enough to be seen or measured directly.

Back 12

Macroscopic

Front 13

One molecule of water contains two types of ______.

Back 13

Element

Front 14

The abbreviation "C" is the _________ for carbon.

Back 14

Element symbol

Front 15

Oxygen and sulfur belong to the same _____ in the periodic table.

Back 15

Group

Front 16

It is possible to identify an element solely based on its _______

Back 16

Atomic Number

Front 17

The forces that link a hydrogen atom to an oxygen atom in a water molecule are called _____ forces.

Back 17

Intramolecular

Front 18

Nearly all the mass of an atom is contained in the _____ of the atom.

Back 18

Nucleus

Front 19

A _______ is a process during which the structure or composition of molecules in a substance is disrupted in order to create a new substance.

Back 19

Chemical change

Front 20

The carbon to hydrogen bonds in methane are ______ bonds because electrons are shared among individual atoms.

Back 20

Covalent

Front 21

The nucleus of an atom carries a positive charge because it contains one or more _____.

Back 21

Protons

Front 22

The _____ forces that hold water molecules together are stronger in ice than in liquid water.

Back 22

Intermolecular

Front 23

When all the positive and negative charges in an atom or molecule cancel out completely, the atom or molecule is considered _____

Back 23

Neutral

Front 24

Nearly all the volume of an atom is occupied by _____.

Back 24

Electrons

Front 25

Pure sodium is a dangerous chemical because of its high level of ______.

Back 25

Reactivity

Front 26

A _______ is a substance that dissociates only partially in water to give off OH- ions.

Back 26

Weak base

Front 27

A hydrogen ion in an aqueous solution is more likely found as a ________.

Back 27

Hydronium ion

Front 28

A solution in which the concentrations of H+ ions and OH- ions are equal is considered a ______ solution.

Back 28

Neutral

Front 29

Acetic acid is an example of a ______.

Back 29

Weak acid

Front 30

According to the ______, a base is a proton acceptor.

Back 30

Bronsted Lowry definition

Front 31

An _____ is a substance that, when dissolved in water, results in a pH lower than seven.

Back 31

Acid

Front 32

Hydrochloric acid is an example of a __________.

Back 32

Strong acid

Front 33

A substance that dissociates completely in water to give OH- ions is considered a

Back 33

Strong base

Front 34

A substance is _____ when it can act as either an acid or a base under different conditions.

Back 34

amphoteric

Front 35

A solution that, in the presence of water, gives off OH- ions is considered a ___________

Back 35

Base

Front 36

A ______ is a substance that makes it easier to break the surface of a liquid.

Back 36

Surfactant

Front 37

The top surface of a column of liquid has a curved shape knows as the ______.

Back 37

Meniscus

Front 38

_____ is the ability of a liquid to move or change shape as a result of an external force.

Back 38

Flow

Front 39

A _____ liquid is a liquid that is resistant to flow.

Back 39

Viscous

Front 40

The surface of liquids tends to resist being broken because of their _____.

Back 40

Surface tension

Front 41

The tendency of a liquid to hold together is due to ______.

Back 41

Cohesion

Front 42

A liquid that does not resist flow is considered a _______ liquid.

Back 42

Non-viscous

Front 43

______ is is what causes liquids to stick to surfaces.

Back 43

Adhesion

Front 44

A liquid with high _____ will show a lot of resistance to flow.

Back 44

Viscosity

Front 45

A liquid can be pulled up in a thin tube against gravity due to _____.

Back 45

Capillary action