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CELL BIOLOGY & CHEM 402 > Physical and Chemcial Change > Flashcards

Physical and Chemcial Change Flashcards

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1
Q

Atoms are the building blocks of……?

A

Matter

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2
Q

The smallest representative of an element is an….?

A

Atom

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3
Q

The smallest piece of an element is an…?

A

Element

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4
Q

A molecule can be made up of different atoms which is called……

A

Compound

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5
Q

A molecule can be made up of many of the same atoms, this is called

A

Elemental

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6
Q

Atoms of the same element are

A

Identical

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7
Q

Metals are (3 words)

A

Shiney, malleable, and conductors

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8
Q

Atoms are composed of 3 subatomic particles

A

Protons, neutons, electrons

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9
Q

The nucleus contains (2)

A

Protons and Neutrons

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10
Q

Electrons surround the …

A

Nucleus

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11
Q

Atoms have a nucleus and a cloud of

A

Electrons

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12
Q

Subatomic means

A

Smaller or below the level of an atom

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13
Q

Proton and neutrons each have a mass of

A

one (they weigh the same)

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14
Q

Electrons are very very very tiny and they have…

A

the 1/2000 mass of a proton

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15
Q

Protons have a positive charge and neutrons

A

have no charge (are neutral)

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16
Q

Electrons have a…

A

Negative charge

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17
Q

The nucleus is made up of

A

Positive and neutral particles

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18
Q

The atomic cloud is made up of

A

negative particles

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19
Q

positive (protons) and neutral (neutrons) particles like to

A

Group together

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20
Q

negative (electrons) particles stay

A

far apart

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21
Q

What is the charge and mass of a proton

A

+, 1

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22
Q

What is the charge and mass of an electron

A

-, 1/2000

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23
Q

What is the charge and mass of a neutron

A

0, 1

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24
Q

The atomic number of an element is

A

the number of protons in the nucleus of an atom

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25
Q

So Boron has an atomic number 5, so boron has

A

5 protons

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26
Q

On your periodic table, the number of protons is equal to the number of….? Because the elements are all….?

A

Electrons, Neutral

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27
Q

Neutral means that an element has the same (4 words)

A

Positive and Negative Charges

28
Q

The atoms on the periodic table are……..on their own but ……….

A

unstable, neutral

29
Q

Proton number is equal to the number of…

A

Electrons

30
Q

Atoms in the periodic table are …..

A

Neutral

31
Q

Elements are arranged in the periodic table in order of

A

increasing atomic number

32
Q

An atomic number is always a

A

whole number

33
Q

The mass number is always……..than the atomic number

A

bigger

34
Q

Change the atomic number you change the

A

element

35
Q

The mass number tells us how much the element

A

weighs

36
Q

Protons + Neutrons equal the

A

mass number

37
Q

Atomic number (P+ (=) e-) so mass equals

A

(P+ (+) N)

38
Q

neutrons = mass number -

A

atomic number

39
Q

ON the period table the atomic number tells us the number of

A

protons and electrons (11 protons and 11 electrons for NA)

40
Q

On the PT the mass number tells us the number of

A

protons + neutrons (11 Protons + 12 neutrons = 23 Mass number for NZ)

41
Q

Everything is neutral in the periodic table because….

A

you have one electron (-) and one proton (+)

42
Q

What is an isotope?

A

An isotope is an atom of an element and has the same atomic number, but a different number of neutrons

43
Q

An isotope can have slightly different

A

mass numbers

44
Q

All elements have isotopes that occur

A

naturally

45
Q

The isotope has the same number of

A

protons

46
Q

The isotope has a different number of

A

neutrons

47
Q

The isotope can have a different

A

mass number

48
Q

The relative atomic weight (RAM) is the ………(2 words) of all the isotopes for that element.

A

average mass

49
Q

On the periodic table was is the most common isotope mass number for Mg?

A

24

50
Q

Atomic weight is rounded to the nearest whole number, it gives the mass number for the most….. …… of that …….

A

common isotope for that number

51
Q

The RAM is the average number of isotopes mass so not a….

A

whole number

52
Q

One element (atom) can have different weight (P+N) but still retains its…..

A

proton number or atomic number

53
Q

True or false, relative mass is not a whole number (unlike atomic mass)

A

True as it is an average of all the isotopes in that element

54
Q

When the atomic weight (RAM) is rounded to the nearest whole number, it gives the …….. ………. for the most ……. ……….. of that element

A

mass number , common isotope

55
Q

Elections have energy levels for placement in the atomic cloud. They are…

A

two seats in the front then placed in eight seats

56
Q

What is the name for the electrons in the outer shell

A

Valance electrons

57
Q

The row of the periodic table will tell you how many …. levels there are in the element

A

energy

58
Q

The columns (ignoring the ones in the middle) of the periodic table will tell you how many…..

A

valance electrons there are

59
Q

C6H12O6 + 02 - CO2 + H20 is this a physical or chemical change

A

Chemical

60
Q

Using a solvent to remove a grease spot a physical or chemical change

A

Physical

61
Q

Is Wax melting a physical or chemical change

A

physical

62
Q

Is digestion of food a physical change or chemical change

A

Chemical

63
Q

Is a candle burning a physical change or a chemical change?

A

chemical

64
Q

Is photosynthesis a physical or chemical change

A

Chemical

65
Q

C6H12O6(s) - C6H12O6 (l) physical or chemical change?

A

Physical

66
Q

Sublimation of dry ice to C02 gas is a physical or chemical change

A

Physical

CELL BIOLOGY & CHEM 402 (13 decks)

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