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Chem 110 > Quiz 2 Material (Atoms) > Flashcards

Quiz 2 Material (Atoms) Flashcards

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1
Q

Four qualities of matter

A

Hot, dry, cold and moist

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2
Q

Matter is composed of…..

A

a finite number of incredibly small but discrete units we call atoms

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3
Q

Each element consists of ________ particles called atoms.

A

indivisible,minute

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4
Q

All atoms of a given element are…..

A

identical

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5
Q

Atoms of different elements have

A

different masses

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6
Q

Atoms of two or more different elements combine to

A

form compounds

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7
Q

Atoms are rearranged to

A

form new combinations in a chemical reaction

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8
Q

Elements are only made with

A

One type of atom

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9
Q

Protons and neutrons have what mass?

A

Nearly the same mass

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10
Q

Electrons have what type of mass?

A

Negligible mass

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11
Q

What kinda of charges do protons, neutrons and electrons carry?

A

Protons: positive + 1
Neutrons: no charge
Electrons: negative -1

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12
Q

Which nucleon is heaviest?

A

Neutrons

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13
Q

Which nucleon is lightest?

A

Electrons

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14
Q

Where is most of an atoms mass located?

A

Inside the nucleus

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15
Q

What comprises most of an atoms volume?

A

The electron cloud

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16
Q

Like charges ___ and unlike charges ___

A

Repel, attract

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17
Q

Neutrons are….

A

Neutral

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18
Q

Mass number

A

Number of protons and neutrons inside the nucleus

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19
Q

Atomic number

A

Number of protons in the nucleus

20
Q

Neutral atoms have

A

No overall charge

21
Q

Every atom of a given element has

A

the same atomic number (same number of protons)

22
Q

How many protons, neutrons and electrons are in iron-5?

A

26 p, 30 n, 26 e

23
Q

Isotopes

A

atoms of the same element that have a different number of neutrons

24
Q

Identify the number of protons, neutrons, and electrons in Boron-11.

A

P: 5
N: 6
E: 5

25
Q

The calculation of an element’s atomic weight includes the ____ of each isotope.

A

percent abundance

26
Q

How do you calculate atomic mass?

A

-List the isotope
-List the mass in atomic units
-List isotopic abundance
-Multiply isotopic abundance by the mass and add the products

27
Q

Rows and columns on the periodic table are called…..

A

Periods and groups

28
Q

Properties of metals

A

conduct heat & electricity
shiny in appearance
are malleable & ductile
most are solids at room temp

29
Q

Properties of non-metals

A

poor conductors of heat & electricity
not shiny, malleable or ductile (are brittle)
can be s, l, or g at room temp.

30
Q

Properties of metalloids

A

conduct electricity but not as well as metals

31
Q

Representative elements

A

Elements in A-groups

32
Q

Transition elements

A

Elements in B-groups

33
Q

Inner transition elements

A

Elements in series

34
Q

Halogens

A

-exist as two atoms joined together
-very reactive
-combine with many other elements to form compounds

35
Q

alkali metals and alkaline earth metals

A

-low melting points
-good conductors of heat and electricity
-react with water to form basic solutions

36
Q

Noble gases

A

-Very stable
-Rarely combine with other elements
-Exist as monatomic gases

37
Q

The net charge on an atom of a given element changes as ___ are added or removed

A

Electrons

38
Q

Neutral atoms of all isotopes of a given element have the same

A

Number of electrons

39
Q

How many neutrons are in an atom of uranium-235?

A

143

40
Q

Where is the mass number located?

A

Bottom center or top left

41
Q

Where is the atomic number located?

A

Top center or bottom left

42
Q

Cations vs anions

A

Cations have a positive charge
Anions form a negative charge

43
Q

Conversion for Celsius to Kelvin

A

tC + 273.15

44
Q

How many cm in one inch?

A

2.54

45
Q

How many grams in one pound?

A

453.592

46
Q

Conversion for Celsius to Fahrenheit?

A

(tC x 1.8) + 32

47
Q

How many pounds in a kilogram?

A

2.21

Chem 110 (9 decks)

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