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Fall 2023 semester review

Total questions: 79

Worksheet time: 4hrs 57mins

Name
Class
Date
1.

A + B --> AB

a)

synthesis

b)

decomposition

c)

single replacement

d)

combusion

2.

What should you yell if you break glass in Mrs Keaveney's class?

a)

oops

b)

whoopsie

c)

emergency

d)

gosh darn it

3.

2 ANSWERS. What is a true statement about weight and mass?

a)

Gravity can change the mass of an object

b)

Gravity can change the weight of an object.

c)

Mass is constant.

d)

Weight is constant.

4.

What do you wear to protect your eyes during lab experiments?

a)

Apron

b)

Gloves

c)

Goggles

d)

Fire blanket

5.

What is the metric unit for mass?

a)

Liter

b)

Meter

c)

Gram

d)

Second

6.

What is the metric unit for volume?

a)

Liter

b)

Meter

c)

Gram

d)

Second

7.

How do you write 2.3 x 10^3 in standard notation?

a)

0.23

b)

23

c)

2300

d)

230

8.

What type of change is required to form a compound?

a)

Chemical

b)

Physical

9.

What scientist discovered electrons?

a)

Bohr

b)

Thompson

c)

Rutherford

d)

Democritus

10.

Who discovered that an atom has a small, dense, positively charged nucleus?

a)

Bohr

b)

Rutherford

c)

Thompson

d)

Dalton

11.

What family of elements is primarily nonreactive?

a)

Alkali metals

b)

Alkaline earth metals

c)

Halogens

d)

Noble gasses

12.

Which element has the highest electronegativity?

a)

Hydrogen

b)

Francium

c)

Fluorine

13.

What is the most accurate tool to measure volume of a liquid?

a)

Beaker

b)

Test tube

c)

Graduated cylinder

d)

Flask

14.

Which would be a homogenous mixture?

a)

Sand and water

b)

Sand and iron

c)

Sugar and water

d)

Sugar and sand

15.

Can you physically separate a compound?

a)

Yes

b)

No

16.

Write this number in scientific notation.

0.00012

a)

12 x 10^4

b)

1.2 x 10^-4

c)

12 x 10^-4

17.

Formula units are held together by...

a)

Ionic bonds

b)

Covalent bonds

c)

Intermolecular bonds

18.

Who conducted the Gold Foil experiment?

a)

Thompson

b)

Rutherford

c)

Bohr

d)

Dalton

19.

A scientist observed that particles in a sample are vibrating in a fixed position. What state of matter does this describe?

a)

Plasma

b)

Gas

c)

Liquid

d)

Solid

20.

Molecules are held together by...

a)

Ionic bonds

b)

Covalent bonds

c)

Intermolecular forces

21.

What type of bond involves a metal and a nonmetal?

a)

Ionic

b)

Covalent

c)

Metallic

22.

What is the bond type and name for NO3?

a)

covalent, nitrogen oxide

b)

covalent, nitrogen trioxide

c)

ionic, nitrogen oxide

d)

ionic, nitrogen trioxide

23.

Will water (a polar substance) dissolve another substance that is also polar?

a)

Yes

b)

No

c)

Only in the summer

24.

What is the IUPAC name for CaCl2?

a)

calcium dichloride

b)

calcium chloride

25.

Which scientist designed the basis of our modern periodic table?

a)

Ernest Rutherford

b)

Dmitri Mendeleev

c)

Gregor Mendel

d)

John Dalton

26.

What group is known as the alkali metals?

a)

1

b)

2

c)

17

d)

18

27.

How many neutrons are in carbon-13?

a)

13

b)

6

c)

7

d)

-13

28.

What changes between isotopes of an element?

a)

number of neutrons

b)

number of electrons

c)

number of protons

d)

nothing

29.

How many valence electrons do noble gases have (except for helium)?

a)

1

b)

2

c)

7

d)

8

30.

Which group of elements has an ionic charge of -1?

a)

1

b)

2

c)

16

d)

17

31.

Candle wax melts.

a)

Chemical change

b)

Physical change

32.

Sample B has a mass of 34.78 grams.

a)

Chemical Property

b)

Physical property

33.

What is the standard unit of temperature for science?

a)

Farenheit

b)

Celsius

c)

Kelvin

34.

Which response has the correct number of significant figures?

15.6 g / 3.2 L

a)

4.875 g / L

b)

4.88 g / L

c)

4.9 g / L

d)

5 g/L

35.

What piece of lab equipment is a cylinder with a flat bottom?

a)

Flask

b)

Test tube

c)

Beaker

36.

Particles are mostly loosely held together in a substance in the _____ state.

a)

Gas

b)

Liquid

c)

Solid

37.

How would you classify zinc?

a)

element

b)

formula unit

c)

molecule

d)

mixture

38.

Who made the plum pudding model of the atom?

a)

Schrodinger

b)

Thompson

c)

Rutherford

d)

Bohr

39.

Who discovered that atoms have specific energy levels for electrons?

a)

Schrodinger

b)

Democritus

c)

Bohr

d)

Rutherford

40.

Reactivity to oxygen

a)

Physical property

b)

Chemical property

41.

Convert 732 mL to L.

a)

0.732 L

b)

73.2 L

c)

7.32 L

d)

7320 L

42.

Subatomic particle with a positive charge

a)

electron

b)

proton

c)

neutron

43.

If an atom loses electrons, it becomes a __________

a)

cation

b)

anion

c)

neutral ion

44.

Model which describes bonding within metals

a)

Ionic model

b)

Covalent model

c)

Electron-sea model

45.

Sharing electrons between nonmetal atoms

a)

Electron sea model

b)

Ionic bonding

c)

Covalent bonding

46.

Atomic mass comes from

a)

electrons and protons

b)

protons and neutrons

c)

neutrons and electrons

d)

valence electrons

47.

Calcium bromide

a)

CBr

b)

CaBr

c)

Ca2Br

d)

CaBr2

48.

lead (II) oxide

a)

LO

b)

L2O

c)

PbO

d)

Pb2O

49.

1 kilometer = ? meters

a)

0.10

b)

10

c)

100

d)

1000

50.

Choose 2 indicators of a chemical reaction

a)

formation of a gas

b)

sample dissolving

c)

formation of a precipitate

d)

sample growing

51.

Procedure if you get a chemical on your bare skin

a)

Die

b)

Rinse and contact the teacher

c)

Hide from the teacher

52.

Water and Cheerios are placed together in a bowl.

a)

Physical change

b)

Chemical change

53.

How many protons in an aluminum atom?

a)

13

b)

30

c)

3

d)

17

54.

How many total electrons in Na+ ion?

a)

12

b)

11

c)

10

55.

Which is NOT a state of matter?

a)

Gas

b)

Solid

c)

Liquid

d)

Texas

56.

Name of C2H4

a)

carbon hydride

b)

dicarbon hydride

c)

carbon tetrahydide

d)

dicarbon tetrahydride

57.

Type of element that tends to be solid and a good conductor

a)

Nonmetal

b)

Metal

c)

Metalloid

58.

Is this equation balanced?

H2 + O2 -->. H2O

a)

Yes

b)

No

59.

Where do you find valence electrons?

a)

High energy level

b)

Low energy level

c)

Inside the nucleus

60.

What is the atomic number of Fluorine?

a)

18

b)

17

c)

9

d)

7

61.

AB + C --> A + CB

a)

decomposition

b)

combustion

c)

synthesis

d)

single replacement

62.

The reactivity of an element depends on the number of protons.

a)

True

b)

False

63.

The ________ rule says that an atom will gain or lose electrons to reach a full outer shell.

a)

stabilization rule

b)

octet rule

c)

ionization rule

64.

Which element is larger?

a)

Oxygen

b)

Sulfur

65.

Select ALL choices that are EXTENSIVE properties.

a)

melting point

b)

volume

c)

mass

d)

density

66.

What do you do with long hair during a lab experiment?

a)

Cover it with a hat

b)

Cut it

c)

Burn it

d)

Pull it back with a hair tie

67.

What subatomic particle is considered to have no mass?

a)

proton

b)

neutron

c)

electron

68.

Which is a positive ion?

a)

Anion

b)

Cation

69.

Nonmetals gain electrons during chemical reaction

a)

True

b)

False

70.

Salt is dissolved into water.

a)

Chemical change

b)

Physical change

71.

Do you need to take off your clothes to use the emergency shower?

a)

Yes

b)

No

72.

Which state of matter has definite volume, but not a definite shape.

a)

Plasma

b)

Gas

c)

Liquid

d)

Solid

73.

Measures mass of a sample

a)

Beaker

b)

Bunsen burner

c)

Ruler

d)

Balance

74.

Isotope

a)

varies in number of protons

b)

varies in number of neutrons

c)

varies in number of electrons

75.

What family has ionic charge of -1?

a)

alkali metals

b)

transition metals

c)

halogens

d)

noble gasses

76.

Evaporation

a)

Chemical change

b)

Physical change

77.

When molecules are heated they...

a)

gain energy and move faster

b)

gain energy and slow down

c)

lose energy and move faster

d)

lose energy and slow down

78.

Where are protons found?

a)

Nucleus of the atom

b)

Energy levels surrounding the nucleus

79.

A tablespoon of baking soda was put in a bowl of vinegar. The substance created bubbles.

a)

Physical change

b)

Chemical change

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