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Part 2 Science

Total questions: 110

Worksheet time: 58mins

Name
Class
Date
1.

What does Bohr’s model look like?

a)

Move like planets around the sun

b)

In circular orbits at different levels

c)

Amounts of energy separate one level from another

d)

Valence elections dots only no circular orbits unlike Lewis Dot Diagrams

2.

Bohr postulated (suggested) that fixed energy is related to the (a)  

3.

Bohr postulated (suggested) that (a)   cannot exist between orbits

4.

Bohr postulated (suggested) that the higher the energy level, the (a)   it is from the nucleus

5.

Bohr postulated (suggested) that an atom with a maximum number of electrons in the outermost orbital energy level is ____

a)

Reactive

b)

Stable

c)

Unreactive

d)

High

6.

What did Bohr’s theory help explain?

a)

The law of conservation of mass

b)

Periodic table

c)

Periodic law

d)

Valence electrons

7.

Why are some atoms very reactive

a)

They have one electron less than a full orbital

b)

They have 2 electrons less than a full orbital

c)

They have no electrons less than a full orbital

d)

They just are

8.

Other atoms are very reactive because…

a)

They have no electrons in the outer orbital

b)

They have only one electron in the outer orbital

c)

They have different laws

d)

They have many electrons

9.

Bohr’s theory couldn’t explain or show…

a)

The shape or the path traveled by the electrons

b)

The shape of the atom

c)

The shape of the orbital

d)

The shape or path traveled by the energy

10.

Bohr’s though couldn’t explain more complex ____

a)

electrons

b)

orbitals

c)

Atoms

d)

Shapes

11.

The ______ away from the nucleus means more ______

a)

Farther, mass

b)

Closer, energy

c)

Closer, mass

d)

Farther, energy

12.

How many electrons does the first energy level have

a)

8

b)

2

c)

4

d)

6

13.

How many electrons does the second energy level have

a)

2

b)

4

c)

6

d)

8

14.

What do the dots represent on the Bohr diagram?

a)

Valence electrons

b)

Electrons

c)

Idk

d)

mass

15.

What do the dots represent on the Lewis Dot Diagram?

a)

Electrons

b)

Valence electrons

c)

Idk

d)

mass

16.

Chemical bond- a _____ that holds 2 or more ____ together

a)

Force, structures

b)

Bond, atoms

c)

Force, atoms

d)

Bond, structures

17.

What is another name for the Lewis Dot Diagram

a)

Electron cloud diagram

b)

Lewis’ diagram

c)

Electron dot diagram

d)

Electron diagram

18.

Valence electron- _____ electron of an atom that participates in ______ bonding

a)

Outermost, physical

b)

Innermost, chemical

c)

Outermost, chemical

d)

Innermost, ionic

19.

H20

What is the subscript

a)

H

b)

O

c)

2

d)

Idk

20.

2H4S

What is the subscript

a)

H

b)

S

c)

4

d)

2

21.

2H2S

How many atoms of Hydrogen are there

a)

4

b)

2

c)

6

d)

1

22.

2H2S

How many atoms of Sulfur are there?

a)

3

b)

4

c)

1

d)

2

23.

What is the coefficient

4H2S

a)

H

b)

4

c)

2

d)

S

24.

What are the 3 types of bonds we are learning about?

a)

ionic bonds

b)

iconic bonds

c)

covalent conds

d)

covalence bonds

e)

metallic bonds

25.

Why do atoms bond?

-each atom wants a full ______energy level

-gain, loose, and share _________ to achieve the duet or octet rule

-aka being "______"

-gives each atom an electron ______ similar to that of a noble gas

a)

outermost, electrons, fat and happy, number

b)

innermost, valence electrons, fat and happy, configuration

c)

outermost, valence electrons, fat and happy, configuration

d)

innermost, electrons, fat, movement

26.

Chemical bonds

-determine the ______ of the compound

-the _____affects______

a)

structure, structure, bonds

b)

structure, structure, properties

c)

structure, bonds, properties

d)

properties, properties, structure

27.

Properties examples

a)

melting/boiling point

b)

conducting

c)

reaction

d)

how many valence electrons

28.

Ions:

-an atom that is no longer ____ because it has lost or gained _____

a)

Neutral, valence electrons

b)

Positive, electrons

c)

Negative, valence electrons

d)

Neutral, electrons

29.

True or false- the number of electrons is not equal to the number of protons if the atoms has a neutral charge

a)

False

b)

True

c)

Or

d)

both true and false

30.

Na+1 is called

a)

A sodium element

b)

Sodium

c)

Sodium ion

d)

Ion

31.

True or false- change the name of a nonmetal to -ide

a)

True

b)

Uhhhmmmm

c)

False

d)

Or

32.

Na+1 means it has lost/gained one electron

a)

Gained

b)

Lost

c)

None

d)

/

33.

What is sulfur changed to into for the ion name

a)

Sulfuride

b)

Sulfide

c)

Sufide

d)

Sulfurides

34.

Ionic bonding definition-

when an atom of a _______ takes 1 or more electrons from an atom of a _______ so both atoms end up with 8 valence electrons

a)

nonmetal, metal

b)

Metal, metal

c)

Nonmetal, nonmetal

d)

Idk

35.

Ionic bonding is between a

a)

metal and a metal

b)

Metal and a nonmetal

c)

Nonmetal and a nonmetal

d)

Every metal

36.

Is Mg3N2 an ionic bond

a)

Yes; magnesium is a metal and nitrogen is a metal

b)

Yes, magnesium is a metal and nitrogen is a nonmetal

c)

No, magnesium is a metal and nitrogen is a nonmetal

d)

It’s both

37.

Ionic bond formation

- _____atoms come near each other

-electrons are ______ from the metal atom to the nonmetal atom

-they stick together because of _________ forces like magnets

a)

Neutral, transferred, electrostatic

b)

Neutral, taken, electrostatic

c)

Positive, taken, strong

d)

Negative, transferred, electrostatic

38.

Ionic bonding continued…

-metals will tend to lose electrons and become positive _____

-nonmetals will tend to gain electrons and become negative _____

a)

Cations, cations

b)

Anions, anions

c)

Anions, cations

d)

Cations, anions

39.

Properties of Ionic compounds

a)

Crystalline and rigid structure

b)

Low melting points

c)

Ions are strongly bonded

d)

High melting points

e)

A regular repeating arrangement of ions in the solid

40.

Crystalline structures

-the positive cation sticks to the _____anions like a magnet

a)

Positive

b)

Negative

c)

Crystalline

d)

Structure

41.

Are ionic solids brittle

a)

No

b)

Yes

c)

Idk

d)

in between

42.

Do crystalline structures conduct?

-conducting _____is allowing charges to move

-in a solid, the ions are _______place

-ionic solids are _____

a)

Electricity, out of, insulators,

b)

Electricity, locked in, insulators

c)

Electricity, locked in, strong

d)

All

43.

Do crystalline structures conduct?

-when ____, the ions can move around and conduct

-first get them to 800 C

-______in water, they conduct

a)

Froze, dissolved

b)

Melted, dissolved

c)

Froze, put

d)

Melted, put

44.

Metals are a cation or anion

a)

Cation

b)

Anion

c)

Idk

d)

Both

45.

Nonmetals are cations or anions

a)

Cations

b)

Anions

c)

Idk

d)

Both

46.

Metallic bonds:

-how ____ are held together in the solid

-metals hold on their valence electrons very ______

-think of them as positive ions floating in a _______

a)

Atoms, strongly, sea,

b)

Atoms, weakly, Circle

c)

Atoms, weakly, sea of electrons

d)

Atoms, strongly, sea of electrons

47.

Metallic bonds:

-electrons are free to move through the ____

-metals conduct ______

a)

Nucleus, electricity

b)

Atom, heat

c)

Nucleus, heat

d)

Solid, electricity

48.

T or F

Metals are not malleable

a)

False

b)

True

c)

Idek

d)

Both

49.

Malleable

a)

drawn into wires

b)

Hammered into shape (bend)

c)

Allow atoms to slide by

d)

all

50.

Ductile

a)

Drawn into wires

b)

Hammered into shape (bend)

c)

All

d)

Allow atoms to slide by

51.

What allows atoms to slide by

a)

Nucleus

b)

you

c)

Atoms

d)

Electrons

52.

Covalent bond:

-when an atom of one ______ shares one or more electrons with an atom of a ______ so both atoms end up with 8 valence electrons

a)

Nonmetal, metal

b)

Nonmetal, metalloid

c)

Nonmetal, nonmetal

d)

Metal, metalloid

53.

Is CO2 a covalent compound

a)

Yes; this is only metal elements

b)

no; it is not 2 nonmetals

c)

Yes; this is only nonmetal elements

d)

No; it just isnt

54.

A single covalent bond is a sharing of how many valence electrons

a)

1

b)

2

c)

3

d)

4

55.

A single covalent bond Is only what

a)

Nonmetals and hydrogen

b)

metals and hydrogen

c)

Hydrogen and helium

d)

Lithium and beryllium

56.

First element on the periodic table

a)

Beryllium

b)

Lithium

c)

Helium

d)

Hydrogen

57.

Single covalent bonds are different from an ionic bond because they actually form what

a)

atoms

b)

Bonds

c)

Molecules

d)

something

58.

H-H is an example of what formula

a)

chemical formula

b)

Structural formula

c)

Both 1 and 2

d)

Idek

59.

BONUS-

only elements that can bond by themselves

a)

Bromine, iodine, nitrogen, lithium, hydrogen, helium, fluorine

b)

Bromine, carbon, nitrogen, chlorine, oxygen, fluorine, iodine, selenium

c)

Bromine, iodine, nitrogen, chlorine, hydrogen, oxygen, and fluorine

d)

All of the elements

60.

Double Covalent bond-

when 2 atoms share 2 pairs of ________

a)

molecules

b)

Atoms

c)

Bonds

d)

Valence electrons

61.

When 2 atoms share 3 pairs of valence electrons

a)

Double covalent bond

b)

Triple covalent bond

c)

Quadruple covalent bond

d)

All

62.

Example of triple covalent bond

a)

CO2

b)

Nitrogen

c)

Both

d)

Neither

63.

Example of double covalent bond

a)

CO2

b)

Nitrogen

c)

Both

d)

Neither

64.

What is

a group of atoms held together by covalent bonding that acts as an independent unit

a)

Atoms

b)

Molecules

c)

Bonds

d)

ions

65.

When the atoms in a bond are the same, the elements are shared equally

a)

Bonds

b)

Covalent bonds

c)

Ionic bonds

d)

Polar bonds

66.

When 2 different types of atoms are connected, the electrons may not be shared equally…. Creating a partial _____ and partial ________ end

a)

Positive, negative

b)

Large, small

c)

Polar, nonpolar

d)

Idk

67.

True or false-

for ionic and covalent bonding, change the second nonmetal to -ide

a)

True

b)

False

c)

Both

d)

Neither

68.

Prefix

Mono-

a)

One

b)

Two

c)

Three

d)

Four

69.

Prefix

Di-

a)

Three

b)

One

c)

Two

d)

Five

70.

Prefix

Tri-

a)

Five

b)

Four

c)

Three

d)

Two

71.

Prefix

Tetra-

a)

Five

b)

Six

c)

Four

d)

Three

72.

Prefix

Penta-

a)

Five

b)

Seven

c)

Six

d)

Eight

73.

Prefix

Hexa-

a)

Seven

b)

Eight

c)

Nine

d)

Six

74.

Prefix

Hepta-

a)

Eight

b)

Nine

c)

Seven

d)

Ten

75.

Prefix

Octa-

a)

nine

b)

Five

c)

Eight

d)

Two

76.

Prefix

Nona-

a)

Seven

b)

Eight

c)

Ten

d)

Nine

77.

Prefix

Deca-

a)

Eleven

b)

Nine

c)

Ten

d)

Eight

78.

Use prefixes ONLY for ______ compounds

a)

Ionic

b)

Metallic

c)

Covalent

d)

All

79.

Solid, liquid, gas

a)

Mass

b)

Volume

c)

Matter

d)

Density

80.

Density formula

a)

M/v=b

b)

V/m=d

c)

M/v=d

d)

D/v=m

81.

-shape

-color

-state (solid, liquid, gas)

-density

-smell

-appearance

a)

Chemical change

b)

Physical change

c)

Both

d)

mass

82.

Do physical properties change matter?

a)

No

b)

Yes

c)

Maybe

d)

Both

83.

-flammability (will it burn)

-oxidation (will it burn)

-volatility (will it explode)

-reactivity (will it react)

a)

Physical properties

b)

chemical properties

c)

Both

d)

Neither

84.

Do chemical properties change matter?

a)

Yes

b)

No

c)

Maybe

d)

Idk

85.

A change that alters the appearance of a material but doesn’t make that material into something new

a)

Chemical change

b)

Mental change

c)

Physical change

d)

All

86.

Physical or chemical change? (P or C)

-tearing paper

a)

P

b)

C

c)

Neither

87.

Physical or chemical change? (P or C)

-chopping wood

a)

P

b)

C

c)

neither

88.

Physical or chemical change? (P or C)

-mixing salt and pepper

a)

P

b)

C

c)

Neither

89.

Physical changes

a)

Form new substances

b)

Don’t form new substances

c)

Form some new substances

d)

Neither

90.

Physical or chemical change? (P or C)

-fireworks

a)

P

b)

C

c)

Neither

91.

Physical or chemical change? (P or C)

-cake

a)

C

b)

P

c)

Both

92.

Physical or chemical change? (P or C)

-food rotting

a)

C

b)

P

c)

Neither

93.

a process in which atoms of 1or more substances rearrange to form one or more new substances

a)

Physical change

b)

Electrons

c)

Chemical change

d)

Polar bonds

94.

5 clues to chemical change:

- ____ change

-___ given off

-___ change

-_____ formed- 2 liquids form a solid

-new ______ form

a)

color, odor, liquids, precipitation, substances

b)

Color, gas, temperature, water, atoms

c)

Atoms, color, solid, gas, substances

d)

Color, gas, temperature, precipitate, substances

95.

A description of a chemical reaction using element symbols and chemical formulas

a)

Equations of mass

b)

Chemical formulas

c)

Chemical equations

d)

Balancing matter

96.

2Ag+H2S ——-> Ag2+S+H2

find the reactant

a)

H2S

b)

Ag2+S+H2

c)

2Ag+H2S

d)

All of it

97.

2Ag+H2S ——-> Ag2+S+H2

find the product

a)

2Ag+H2S

b)

————>

c)

All of it

d)

Ag2+S+H2

98.

2Ag+H2S ——-> Ag2+S+H2

find the reaction symbol

a)

————>

b)

All of it

c)

2Ag+H2S

d)

Ag2+S+H2

99.

-the chemical (s) you start with before the reaction

-written on the left side of the equation

a)

Product

b)

Example

c)

Reacter

d)

Reactant

100.

-the new chemical (s) formed by the reaction

a)

Reactant

b)

Reactor

c)

Product

d)

symbol

101.

in a chemical reaction, matter is neither created nor destroyed

a)

Law of mass

b)

law of gravitational pull

c)

Law of conservation on energy

d)

Law of conservation of mass

102.

True or false-

The number and the type of atoms going into a reaction must be the same as the number and type of atom coming out

a)

False

b)

True

c)

Neither

d)

Both

103.

true or false-

if an equation obeys the Law of conservation of mass, it is not balanced

a)

False

b)

True

c)

um

d)

Both

104.

Balanced or not?

CH4+O2 ———> CO2+H2O

a)

Nope

b)

Yeah

c)

Maybe?

d)

Idk

105.

True or false

matter can be created and destroyed, but not changed

a)

true

b)

I’m not sure

c)

False

d)

all

106.

Can subscripts be added, removed, or changed?

a)

Nope

b)

Definitely

c)

Uh

d)

Maybe

107.

Only change ________

a)

Molecules

b)

Atoms

c)

Coefficients

d)

Subscripts

108.

Coefficients can only go _______ chemical formulas never the middle (ex of what not to do- H2 4O)

a)

behind

b)

In between

c)

in the middle

d)

In front of

109.

Balance this

N2+H2 ——> NH3

a)

1N2 3H2 ——> 2NH4

b)

1N2 3H2 ——> 2NH3

c)

Both

d)

Idek how to do this

110.

True or false-

work is not important when balancing chemical equations

a)

False

b)

Maybe

c)

True

d)

Idk

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