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Science Grade 9 > Chapter 1 & 2 Terms > Flashcards

Chapter 1 & 2 Terms Flashcards

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0
Q

Characteristics that describe a substance’s ability to react chemically with other substances to form new products (ex: flammability)

A

Chemical properties

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1
Q

A pure substance that cannot be broken down into simpler components

A

Element

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2
Q

A characteristic of matter that you can observe or measure, such as state, color, or density

A

Physical property

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3
Q

The degree in which a substance will burn

A

Combustibility

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4
Q

The degree to which a specified material conducts electricity, calculated as the ratio of the current density in the material to the electric field that causes the flow of current

A

Conductivity

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5
Q

Is a materials ability to deform under pressure

A

Malleability

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6
Q

Is a solid material’s ability to deform under tensile stress

A

Ductility

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7
Q

Is the way light interacts with the surface of a crystal, rock, or mineral.

A

Lustre

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8
Q

Anything that has mass and volume

A

Matter

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9
Q

The smallest particle of an element that retains the properties of that element

A

Atom

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10
Q

Particles such as protons, neutrons, and electrons that are smaller than atoms; the prefix “sub-“ means below

A

Subatomic particles

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11
Q

Positively charged particle in the atomic nucleus

A

Protons

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12
Q

Uncharged particle in the nucleus of an atom

A

Neutrons

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13
Q

Negatively charged particles surrounding the atomic nucleus

A

Electrons

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14
Q

A region surrounding the nucleus of an atom; may be occupied by electrons

A

Energy levels/shells

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15
Q

In chemistry the positively charged centre of an atom, which contains protons and neutrons. In biology, an organelle that contains an organisms hereditary information and controls all the activities within a cell

A

Nucleus

16
Q

System of eight warning symbols used throughout Canada to provide safety information about chemicals

A

WHMIS

17
Q

Column 1 of the periodic table; include the metallic elements lithium, sodium, potassium, rubidium, cesium, and francium

A

Alkali metals

18
Q

Column 2 of the periodic table; include the metallic beryllium, magnesium, calcium, strontium, barium, and radium

A

Alakine earth metals

19
Q

A set of metallic elements found at the centre of the periodic table; have a complex electron arrangement that sets them apart from other metallic elements

A

Transition metals

20
Q

Column 17 of the periodic table; include the non-metallic elements flourine, chlorine, bromine, iodine, and radon

A

Halogens

21
Q

Column 18 of the periodic table; include the elements helium, neon, argon, krypton, xenon, and radon.

A

Noble gases

22
Q

Are all gases, and they form molecules because they don’t have full valence shells of their own. This includes bromine, iodine, nitrogen, chlorine, hydrogen, oxygen, and flourine

A

Diatomic elements

23
Q

Is an electron that is associated with an atom, and that can participate in the formation of a chemical bond

A

Valance electrons

24
Q

Diagram of the atom that describes the arrangement of subatomic particles; neutrons and protons in the nucleus and electrons in electron shells

A

Bohr-Rutherford diagram

25
Q

Can display properties of both metals and nonmetals

A

Metalloids

26
Q

vertical column, elements with the same properties

A

Family

27
Q

Horizontal row which corresponds to the number of energy levels

A

Period

28
Q

Degree to which the substance combines chemically with other substances (water, acid, etc.)

A

Reactivity

29
Q

Degree to which the substance reacts in the body to produce harmful substances

A

Toxicity

30
Q

A pure substance made up of two or more kinds of elements that are chemically combined

A

Compound

31
Q

Who was the periodic table created by?

A

Mendeleev

Science Grade 9 (2 decks)

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