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Science > Science Review Nov 23rd Test > Flashcards

Science Review Nov 23rd Test Flashcards

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Biology 101 flashcards
1
Q

What is a state of matter

A

Refers to the 3 basic forms that matter can take- Solid, liquid and gas

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2
Q

Condensation

A

Change of state from a gas to a liquid

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3
Q

Sublimation

A

Change of state from a solid to a gas or from a gas to a solid

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4
Q

Deposition

A

Change of state from a gas to a solid

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5
Q

Malleability

A

Term used to describe a substance that may be rolled or pressed into sheets

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6
Q

Ductility

A

Solids definition that can be stretched into a lengthy wire

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7
Q

Conductivity

A

Substances capacity to transmit electricity or to heal

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8
Q

Solubility

A

Mass of a substance that can dissolve in a given amount of solvent to form a saturated solution at a given temperature

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9
Q

Compound

A

Chemical combination of two or more elements

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10
Q

Mixture

A

Combination of pure substances

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11
Q

Solution

A

Mixture of two or more substances which makes it look like one

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12
Q

Aqueous solution

A

Solution where water is the solvent

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13
Q

Colloid

A

Cloudy mixture in which tiny particles of one substance are trapped in another and cannot be separated

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14
Q

Metals

A

Conductor of electricity that is shiny, malleable and ductile

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15
Q

Non metals

A

Dull, brittle element that cannot conduct electricity

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16
Q

Metalloids

A

A métal with both metallic and non metallic properties

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17
Q

Alkali metals

A

Group 1 elements in the periodic table, most reactive of the metals

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18
Q

Alkaline earth metals

A

Group 2 elements in the periodic table, reactivity is not as strong as the alkali

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19
Q

Halogens

A

Group 17 elements, most reactive non metals

20
Q

Noble gasses

A

Group 18 elements, Most stable and unreactive elements

21
Q

Ion

A

An atom that is now electrically charged because of electron loss or gain

22
Q

Polyatomic ions

A

Group of atoms acting as one

23
Q

Corrosion

A

When airborne oxygen interacts with a metal

24
Q

Catalyst

A

Substance that helps a chemical reaction to proceed more quickly

25
Q

Democritus

A

Developed the word atomos. Meaning smallest particles that couldn’t be broken down any further

26
Q

Dalton

A

Suggested elements were composed of atoms

27
Q

Thomson

A

Discovered electrons. Developed raison bun model of matter

28
Q

Nagoaka

A

Modeled matter after the solar system

29
Q

Rutherford

A

Found evidence of central nucleus named central core

30
Q

Bohr

A

Working with Rutherford, found electrons orbit is specific shells

31
Q

Chadwick

A

Discovered neutrons

32
Q

Mendeleev

A

Found the patterns of the periodic table. Organized the periodic table

33
Q

What is the number at the top right of a element

A

Ion charge

34
Q

Atomic number = ?

A

Protons

35
Q

Protons= ?

A

Electrons

36
Q

Atomic mass = ?

A

Neutrons + Protons

(-)

37
Q

Indicators of chemical change

A

Change in colour
Change in odour
Change in temperature
Change of state
Formation of gas

38
Q

Element

A

An element is a substance that cannot be broken down into a simpler format

39
Q

Order of scientist (oldest to newest)

A

DDTNRBC

Don’t don’t trust ni@@as real bih caution

Democritus, dalton, Thomson, nagoaka, Rutherford, Bohr, Chadwick

40
Q

Ionic compound

A

Chemical compound composed of ions held together by electrostatic forces termed ionic bonding

Ionic compound is the non metals + metals

41
Q

Molecular compound

A

Métal + métal

42
Q

Exothermic reaction

A

Chemical reaction that releases energy

43
Q

Endothermic reaction

A

Chemical reaction that absorbs energy

44
Q

Closed system

A

Ex cup of tea with lid on it

45
Q

Open system

A

Experiment allowing the release of one or more chemical reaction products
Ex human body

46
Q

Molecular compounds use ____ for naming numbers of atoms

A

Prefix’s ex mono, di, tri

47
Q

Ionic compound use____ to name numbers

A

Roman numerals

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