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Sceince > Chemistry Is Life > Flashcards

Chemistry Is Life Flashcards

1
Q

What is a subatomic particle that circles an atom’s nucleus?

A

Electron

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2
Q

What is the smallest particle of an element called?

A

Atom

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3
Q

What is a charged atom or molecule?

A

Ion

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4
Q

What is caused by pollutants that combine with water in the air?

A

Acid precipitation

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5
Q

What is anything that occupies space and has mass?

A

Matter

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6
Q

What do two or more atoms held together by covalent bonds form?

A

Molecules

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7
Q

Where in an atom are the neutrons and protons found?

A

Nucleus

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8
Q

The cohesion of water molecules is responsible for what?

A

Surface tension

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9
Q

What are variant forms of an element with different numbers of neutrons called?

A

Isotope

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10
Q

What is the tendency of water molecules to stick together?

A

Cohesion

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11
Q

What is a subatomic particle with no electrical charge?

A

Neutron

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12
Q

What measures the intensity of heat?

A

Temperature

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13
Q

Electrons are shared unequally in a ——–covalent bond?

A

Polar

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14
Q

How many naturally occurring elements are there?

A

92

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15
Q

What contains two or more elements in a fixed ratio?

A

Compound

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16
Q

What are weak bonds between water molecules called?

A

Hydrogen

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17
Q

What donates H positive ions to solutions?

A

Acid

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18
Q

What is formed when two atoms share electrons?

A

Covalent bonds

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19
Q

What is a positively charged particle from the nucleus of an atom?

A

Proton

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20
Q

What is the dissolving agent in a solution called?

A

solvent

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21
Q

What is a liquid containing a uniform mixture of substances called?

A

Solution

22
Q

What forms went to ions of opposite charges attract each other?

A

Ionic bond

23
Q

What is the substance dissolved in a solution?

A

Solute

24
Q

What excepts H positive ions and removes them from solution?

A

Base

25
Q

What is a substance that cannot be broken down chemically into other substances?

A

Element

26
Q

What is the starting materials of a chemical reaction?

A

Reactants

27
Q

What is the sum of protons and neutrons in any given atom?

A

Mass number

28
Q

What is a bond within molecule in which the common electrons are not evenly shared thus creating an overall charge across the molecule?

A

Polar covalent bonds

29
Q

What is a heterogeneous mixture in which the particles do not settle out example blood?

A

Colliod

30
Q

What is a charged atom or molecule?

A

Ion

31
Q

What are the number of protons in the nucleus of an atom?

A

Atomic Number

32
Q

What is an electromagnetic attraction of ions of opposite charges?

A

Ionic bonds

33
Q

What is a measure of how difficult it is to stretch of break the surface of a liquid?

A

Surface tension

34
Q

What is an approximation of the total mass of an atom which is the mass in grams of one mole of the atom for all the represented isotopes for that element?

A

Atomic mass

35
Q

What is the substance that is dissolved?

A

Solute

36
Q

What is the sharing of a pair of valence electrons by two atoms?

A

Covalent bond

37
Q

What is the outermost electrons in any given atom?

A

Valence electrons

38
Q

What is the attraction of a particular kind of atom for the electrons of a covalent bond?

A

Electro negativity

39
Q

What interactions result in atoms held by attractions or the sharing of electrons?

A

Chemical bonds

40
Q

What is an atom of the same element with differing numbers of neutrons?

A

Isotope

41
Q

What is the substance that minimizes changes in pH?

A

Buffer

42
Q

What is the dissolving agent?

A

Solvent

43
Q

What is a uniform mixture of two or more substances?

A

Solution

44
Q

What is a substance that is composed of atoms of two or more different elements that are chemically combined?

A

Compound

45
Q

What is a mixture with our uniform composition?

A

Homogeneous mixture

46
Q

What is the binding together of water molecules due to hydrogen bonding?

A

Cohesion

47
Q

What is a positive ion

A

Cation

48
Q

What is a bond that forms when a hydrogen atom covalently bonded to an electronegative atom is also attracted to another electronegative atom (usually oxygen or nitrogen)?

A

Hydrogen bond

49
Q

What is a compound that releases H positive ions when dissolved in water?

A

Acid

50
Q

What is that energy due to the movement of molecules in a body of matter?

A

Heat

Sceince (5 decks)

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