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Principles Of Chemistry > Chapter 1 - Atoms, Molecules And Ions > Flashcards

Chapter 1 - Atoms, Molecules And Ions Flashcards

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1
Q

Most Accepted Model of an Atom

A

Niels Bohr

Planetary Model

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2
Q

Basic unit of elements that can enter into a chemical combination

A

Atom

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3
Q

Different proportions of the same compound always contain its constituent elements in the same proportion by mass

A

Law of definite proportions

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4
Q

Two elements combine: their mass will just combine too. Fixed mass and present in ration of whole numbers.

A

Law of multiple Proportions

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5
Q

Matter cannot be crated nor destroyed

A

Law of conservation of mass

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6
Q

Internal structure; small particles inside an atom

A

Subatomic Particles (electron, neutron, proton)

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7
Q

Discoverer of electron

And how

A

JJ Thomson

Cathode Ray Tube

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8
Q

Discoverer of nucleus and protons and how

A

Ernest rutherford

Gold foil experiment

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9
Q

Discoverer of neutron

And how

A

James Chadwick

Bombarding beryllium with alpha particles

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10
Q

Number of proton on each atom in an element

A

Atomic number

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11
Q

Total number of neutrons and proton present in the element

A

Mass number

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12
Q

Same atomic number but different mass numbers

A

Isotope

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13
Q

Chart in which element with the same physical and chemical characteristics are grouped together

A

Periodic table

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14
Q

Vertical column in periodic table

A

Group or Families

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15
Q

Horizontal row in the periodic table

A

Period

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16
Q

Good conductor of electricity and heat

A

Metal

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17
Q

Poor conductor of electricity and heat

A

Nonmetal

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18
Q

Possess both characteristics of metal and nonmetals

A

Metalloids

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19
Q

Group 1A

A

Alkali Metals

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20
Q

Group 2A

A

Alkaline Earth Metals

21
Q

Group 7A

A

Halogens

22
Q

Group 6A

A

Chalcogens

23
Q

Group 8A

A

Noble Gases or Rare Gases

24
Q

An aggregate of at least two atoms in a definite arrangement held together by chemical forces

A

Molecule

25
Q

Molecule with 2 atoms

A

Diatomic molecule

26
Q

Molecules with more than 2 atoms

A

Polyatomic molecules

27
Q

An atom that has a net positive or negative charge

A

Ion

28
Q

Ion with net positive charge

A

Cation

29
Q

Ion with negative charge

A

Anion

30
Q

Cation + anion

A

Ionic compound

31
Q

Shows exact number of atoms on the smallest unit

A

Molecular formula

32
Q

One of two or more distinct forms of an element

A

Allotrope

33
Q

Tells is which element are present and the simplest whole-number ration of their atoms

A

Empirical formula

34
Q

Compound that contain carbon

A

Organic compounds

35
Q

Any other compounds that doesn’t contain carbon

A

Inorganic compounds

36
Q

Compounds formed from just two elements

A

Binary compounds

37
Q

Substance that yields hydrogen ions when dissolved into water

A

Acids

38
Q

Acids that contain H, O and another element (central element)

A

Oxoacids

39
Q

Anions of oxoacids

A

Oxoanions

40
Q

Substance that yields hydroxide ions when dissolved into water

A

Bases

41
Q

Compounds that have a specific number of water molecules attached to them

A

Hydrates

42
Q

Simplest type of organic compound

A

Hydrocarbons

43
Q

Emission and transmission of energy through space in the form of waves

A

Radiation

44
Q

Spontaneous emission of particles and / or radiation

A

Radioactivity

45
Q

Weighted average of all isotopes of element with respect to its natural abundance

(Measured in amu)

A

Average Atomic Mass

46
Q

Amount of a substance that contains the same number of entities as there are atoms in 12g carbon-12

A

Mole

47
Q

Amount of substance that is the mass per mole of its entities

A

Molar mass

48
Q

Shows how atoms to one another in a molecule

A

Structural Formula

Principles Of Chemistry (8 decks)

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