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Worksheets

Science Midterm

Total questions: 81

Worksheet time: 41mins

Name
Class
Date
1.

The first periodic table, created by Russian chemist and teacher Dimitri Mendeleev, was organized by the

physical property

a)

atomic mass

b)

color

c)

number of electrons

d)

melting point

2.

Alkali metals are in the first column of the periodic table, we call these columns

a)

nonmetals

b)

groups

c)

periods

d)

metals

3.

Patterns in properties are easily observed in the rows of the table, we call these

a)

groups

b)

metals

c)

periods

d)

metalloids

4.

In the early 20th century, scientist Henry Mosely solved the problem with Mendeleev’s table by ordering

things based on

a)

nuetrons

b)

metals

c)

chemical symbols

d)

atomic number

5.

An elements shows the name, symbol, state of matter, number and

a)

reaction level

b)

image

c)

neutron number

d)

mass number

6.

Which group represents the majority of the table?

a)

nonmetals

b)

metalloids

c)

metals

d)

liquids

7.

Which group represents gases at room temperature?

a)

oxygen group

b)

nonmetals

c)

metals

d)

metalloids

8.

The group that contains semiconductors

a)

metalloids

b)

silicons

c)

metals

d)

nonmetals

9.

All of the elements in groups 1-12 are metals except

a)

hydrogen

b)

helium

c)

oxygen

d)

gold

10.

What describe a metal’s ability to reflect light?

a)

shean

b)

luster

c)

maleability

d)

ductility

11.

A piece of gold with the mass of a paper clip can be pulled into a wire that is more than 3 Km long, this is the

property of

a)

luster

b)

malleability

c)

ductility

d)

conductivity

12.

The metals in group 2 are called

a)

halogens

b)

transition metals

c)

alkali metals

d)

alkaline earth metals

13.

The metals in groups in 3-12 are named the

a)

metalloids

b)

alkali metals

c)

middle metals

d)

transition metals

14.

Metals that are very reactive and have low densities are found in the group named

a)

transition metals

b)

metalloids

c)

alkali metals

d)

alkaline earth metals

15.

96% of the mass of your body comes from just four elements in which group

a)

metals

b)

nonmetals

c)

metalloids

d)

transition metals

16.

Phosphorus and carbon are dull, brittle solids that do not

a)

conduct thermal energy or electricity

b)

form compounds

c)

melt

d)

differ from metals

17.

This group can react with metals and form salts, they all end with -ine

a)

metalloids

b)

halogens

c)

noble gasses

d)

nonmetals

18.

This group will only react with other elements under special conditions in the lab

a)

nonmetals

b)

halogens

c)

noble gases

d)

alkali metals

19.

The deck of cards were used to layout a model of the periodic table. In every example you had a “gap” in

your table. What two things would you use to determine the identity of the missing card in any given gap?

4 lines
20.

Matter that has a definite shape and definite volume would most likely be 

a)

solid

b)

liquid

c)

gas

d)

plasma

21.

A diamond and a chunk of coal are both made up of carbon atoms, the difference is in how those carbon  atoms are arranged. A diamond has what kind of structure? 

a)

expensive

b)

amorphous

c)

crystaline

d)

hard

22.

Matter that has a definite volume but no definite shape would be  

a)

solid

b)

liquid

c)

gas

d)

plasma

23.

 What effect does raising the temperature of honey have on its viscosity? 

a)

reduces

b)

no effect

c)

increases it

d)

eliminates it

24.

We were able to drop many more drops on the surface of a penny in our lab than most of us thought because  the strength of water’s

a)

density

b)

mass

c)

volume

d)

surface tension

25.

Matter that has no definite shape or definite volume is

a)

a solid

b)

liquid

c)

gas

d)

plasma

26.

The gas state of water or gasoline is called a

a)

vapor

b)

gas

c)

mixture

d)

solution

27.

All particles that make up matter have motion and therefore they generate

a)

kinetic energy

b)

atoms

c)

fusion

d)

compounds

28.

How does a solid become a gas without being a liquid

a)

deposition

b)

sublimation

c)

evaporation

d)

condensation

29.

How does a gas become a solid without becoming a liquid?

a)

deposition

b)

sublimation

c)

evaporation

d)

condensation

30.

What process is the opposite of evaporation?

a)

deposition

b)

sublimation

c)

condensation

d)

expansion

31.

The amount of force applied per unit of area is called.

a)

conservation of energy

b)

volume

c)

molecular theory

d)

pressure

32.

What unit of measurement do we use for pressure? 

a)

P

b)

kPa

c)

pa

d)

Kpa

33.

Which Greek philosopher was noted for challenging the popular idea for matter?

a)

Aristotle

b)

Biden

c)

Plato

d)

Democritus

34.

Which scientist revisted the idea of empty space making up much of matter and rejected the idea of earth, water, air, and fire?

a)

Rutherford

b)

Dalton

c)

Bohr

d)

Thomson

35.

Atoms are very small, so small that you easily fit up to---- carbon atoms in the period of a sentence

a)

7.5 million

b)

7.5 billion

c)

7.5 trillion

d)

7.5 thousand

36.

Which of these scientists first proposed that atoms contain electrons that have a negative charge?

a)

Thomson

b)

Dalton

c)

Rutherford

d)

Bohr

37.

Which one of these scientists discovered the nucleus of the atom?

a)

Rutherford

b)

Thomson

c)

Bohr

d)

Dalton

38.

Which one of scientists proposed that electrons move in a circular orbit around the nucleus?

a)

Bohr

b)

Rutherford

c)

Chadwick

d)

Dalton

39.

Which atomic model added the idea of the electron cloud?

a)

Rutherford Model

b)

Modern Model

c)

Dalton Model

d)

Bohr Model

40.

Just as atoms are made of smaller parts, protons, and neutrons are also made up of

a)

beta

b)

alpha

c)

elements

d)

quarks

41.

If you know the number of protons you will also be able to determine the number of

a)

Electrons

b)

neutrons

c)

atoms

d)

isotopes

42.

The number of protons in an atom determine the element's

a)

atomic number

b)

neutrons

c)

atomic mass

d)

number of isotopes

43.

Atoms of the same element that have different number of neutrons are called

a)

Quarks

b)

Neutrides

c)

Elements

d)

Isotopes

44.

Carbon has 6 protons and the isotope C-13 must have how many neutrons

a)

6

b)

7

c)

8

d)

9

45.

Why is the mass number of most elements always written as a decimal number?

a)

It is difficult to measure

b)

It is an average

c)

They are really small

d)

It is a sum

46.

Becquerel, Pierre, and Marie Curie are noted for the accidental discovery of

a)

Atoms

b)

Periodic Table

c)

Radioactivity

d)

Isotopes

47.

What type of ray does not contain particles, but they do contain a lot of energy?

a)

Beta

b)

Alpha

c)

Gamma

d)

x

48.

Made of two protons and two neutrons

a)

Alpha Particle

b)

Beta Particle

49.

Made up of a high energy electron

a)

Alpha Particle

b)

Beta Particle

50.

If Uranium-238 experiences alpha decay, it will become Thorium-(insert number here as answer)

(a)  

51.

If an imaginary element has a half-life of 10 seconds, and you start with 100 grams, how many grams will you have after 30 seconds of decay?

(a)  

52.

What is a good synonym (similar word) for prodigious?

(a)  

53.

What would be a good example of a physical change

a)

 ice melting into a pool of water

b)

silver tarnishing

c)

roasting marshmallows

d)

rust forming on a nail

54.

When you have a physical change you will never end up with

a)

a change in state

b)

a change in size

c)

a new substance

d)

 a change in shape

55.

 Adding thermal energy to matter may cause

a)

particles to freeze

b)

particles to remain the same

c)

a new substance to form

d)

the state to change

56.

The boiling point of matter is the point at which

a)

a solid becomes a liquid

b)

a liquid becomes a solid

c)

a liquid becomes a gas

d)

a solid becomes a gas

57.

 What do we call it when a gas becomes a liquid?

a)

condensation

b)

sublimation

c)

vaporization

d)

boiling

58.

Freezing and Melting are reverse processes, but they

a)

occur at different temps

b)

occur at the same temp

c)

never require a change in energy

d)

never happen to matter

59.

If a sample of water has a mass of 75g and you add 25g of a solute, you will have a final solution with a total  mass of 100g. This is because of 

a)

the law of dissolving

b)

the law of solubility

c)

the law of conservation of mass

d)

the law of states of matter

60.

 What is another way to represent volume besides using the mL measurement?

a)

g/ml

b)

g

c)

gallons

d)

cm3

61.

What is a good example of a chemical property?

a)

ability to burn

b)

ability to change states

c)

ability to change size 

d)

ability to freeze

62.

Which one of these is proof of a chemical change.

a)

bubbles

b)

the formation of a new substance

c)

the formation of the same substance

d)

added energy

63.

. Watermelon sales increase during the months of May, June, and July. Drownings also increase during the  same three months, consistently. You could say  

a)

 they have a causal relationship

b)

e watermelon sales are making people  drown th

c)

 they are negatively correlated

d)

 they are positively correlated 

64.

What do we call the substances on the left side of a chemical equation, before the reaction occurs?

a)

products

b)

reactants

c)

chemical symbols

d)

the yield

65.

What do we call the new substances formed after a chemical reaction?

a)

the yield

b)

products

c)

reactants

d)

chemical symbols

66.

The arrow in a chemical formula is read as 

a)

reactant

b)

symbol

c)

product

d)

yield

67.

 Anything that has mass and takes up space can be considered as  

a)

matter

b)

density

c)

substances

d)

mixtures

68.

. Also known as the building blocks of matter, these tiny particles are 1,000,000 times smaller than

a)

atoms

b)

electrons

c)

neutrons

d)

protons

69.

Nitrogen, Oxygen, Gold are all examples of 

a)

elements

b)

solutions

c)

mixtures

d)

compounds

70.

If you were to investigate the nucleus of an atom, you would likely find 

a)

a cloud of electrons

b)

neutrons and protons

c)

neutrons and electrons

d)

neutrons only

71.

What would you call H2O and H2O2

a)

elements

b)

compounds

c)

mixtures

d)

solutions

72.

Crunchy peanut butter is a great example of a 

a)

homogeneous mixture

b)

solution

c)

compound 

d)

heterogeneous mixture

73.

When you mix table salt with water the salt is the 

a)

compound

b)

solution

c)

solvent

d)

solute

74.

Higher temperatures and surface area usually increase the rate of a reaction, but you can increase the rate of a  reaction by increasing the

(a)  

75.

 In our lab we made sure to fill the graduated cylinder to the 170mL mark. The water level in that cylinder is  determined by the (a)   line.

76.

In our lab on density we were able to determine the volume of an irregular shape (the bolt) by measuring the  (a)   of water. 

77.

 Both of the following classifies physical properties: they can be either size ______________or size  ___________________.

(a)  

78.

 What is the formula for density?_

(a)  

79.

 If a substance had a mass of 33g, and a volume of 11mL, what would the density of that substance be?

(a)  

80.

If you were trying to sell an electronic vehicle to a potential buyer who was concerned about carbon  emissions, what would you omit from your sales pitch?

(a)  

81.

explain why melting points are considered independent properties of matter.

(a)