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Flashcards in Chem Finals Deck (56)
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1

Adhesion

The property of sticking to other substances; a physical property of water

2

Alloy

A solution of two or more metals

3

Anion

Negatively charged ion

4

Atom

The smallest unit of an element that has all of the elements properties

5

Atomic mass

The average mass of an elements atoms

6

Atomic number

The number of protons in an atom of an element

7

Atomic theory

The theory that explains the nature of matter; study of the nature of atoms and how they combine to form all types of matter

8

Bond

The attraction between atoms or ions

9

Cation

Positively charged ion

10

Chemical change

A change in matter that results in the formation of a new substance or substances

11

Chemical property

A characteristic of a substance that describes its ability to change into a new substance or substances; how a substance interacts with other substances, such as acid, or how it reacts to heat or light

12

Chemical reaction

The process in which a chemical change occurs; a reaction that produces a new substance or substances

13

Chemical formula

A formula that identifies which elements, and how many atoms or ions of each, are in a compound

14

Compound

A pure substance made from two or more elements that are combined together chemically

15

Cohesion

The property of sticking together; a physical property of water

16

Covalent bond

The attraction between atoms created by the sharing of a pair of electrons between Atoms

17

Element

A pure substance that cannot be broken down into simpler substances

18

Electron

A negatively charged particle in an atom, located outside the nucleus of the atom

19

Halogens

Elements found in group 17 of the periodic table of elements; these non-metals are all very reactive

20

Group/family

One of 18 vertical columns in the periodic table of elements; classification of elements with certain shared physical and chemical properties; also known as a chemical family

21

Ion

An atom or group of atoms that has an electric charge as the result of losing or gaining electrons

22

Ion charge

An electric charge that an atoms or group of joined atoms take on when it loses or gains electrons

23

Ionic bond

The attraction between ions of opposite charges; bond in an ionic compound

24

Ionic compound

A pure substance formed one at least one metal and one non-metal combine chemically

25

Diatomic molecule

A molecule that contains two atoms of the same element

26

Isotope

Atoms of the same element that have different atomic masses

27

Law

A generalized description of some aspect of the physical world under certain conditions

28

Mass

The measurement of the quantity of matter in an object

29

Matter

Anything that has mass and volume

30

Mechanical mixture

A combination of pure substances in which the different substances are individually visible; a type of heterogeneous mixture

31

Mass number

The total number of protons and neutrons in the nucleus of an atom

32

Medicine wheel

A first Nations and metis way of knowing the physical world; a medicine wheel has four quadrants and connects everything in the universe together into one whole

33

Alkali metals

Elements found in group one of the periodic table of elements; these metals have low melting point and react easily with water and air

34

Metalloids

Elements with metallic and non-metallic properties
Ex: silicon

35

Metals

Elements that are malleable and ductile, and conduct electricity and heat; most elements are metals

36

Molecular compound

A pure substance formed when non-metals combine chemically

37

Molecule

A group of atoms that share electrons; molecular compounds contain molecules

38

Neutral

The property of having no overall electric charge; both the positive and negative charges are equal

39

Noble gas

Elements found in group 18 of the periodic table of elements; these gases are not chemically reactive except in certain special situations

40

Non metals

Elements that do not resemble metals; nonmetals are brindle and generally do not conduct electricity or heat
ex:carbon

41

Nucleus

The Centre of an atom where all of the atoms positive charge and most of an atoms mass is concentrated

42

Period

1of7 horizontal rows in the periodic table of elements

43

Periodic law

A generalized description stating the elements arranged in order of atomic numbers show a periodic repetition of properties

44

Periodic table

A chart that organizes all of the elements in rows and columns

45

Physical property

A characteristic of a substance that can be observed or measured

46


Polyatomic ion

A group of atoms of different elements with an overall electric charge, and which acts as a single ion

47

Protons

A positively charged particle in an atom, located in the nucleus of the atom

48

Property

A characteristic that describes a substance

49

Pure substance

A substance made up of only one kind of particle, with a unique set of properties, such as colour, hardness, boiling point, and melting point; an element or compound

50

Relative mass

The mass of an object in comparison to the mass of another object

51

Solution

A combination of pure substances in which the different substances are not individually visible; a homogeneous mixture

52

Subatomic particle

A particle that makes up an atom; includes protons, neutrons, and electrons

53

Suspension

A cloudy mixture in which tiny particles of one substance are held within another; a type of heterogeneous mixture

54

Theory

A generalized explanation of a set of related observations or events supported by research and good arguments

55

Volume

The measurement of how big an object is or how much space of fluid takes up

56

Transition metal

Elements in the middle of the periodic table