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blue science 1st quarter study guide

Total questions: 69

Worksheet time: 35mins

Name
Class
Date
1.

How many different types of atoms are there in the following molecule?

a)

7

b)

6

c)

3

d)

8

2.

Which of the diagrams below represent a mixture?

a)

A

b)

B

c)

C

d)

D

3.

A __ mixture is a mixture in which the composition is not uniform throughout the mixture.

a)

element

b)

homogenous

c)

heterogenous

d)

compound

4.

Which of the following is a homogeneous mixture?

a)

sand in a bottle

b)

lemonade

c)

Mercury

d)

salad

5.

How many atoms are present in one molecule of glucose, C6H12O6

a)

3

b)

12

c)

24

d)

4

6.

An element is a ___ that cannot be separated into simpler substances by physical or chemical means.

a)

pure substance

b)

mixture

c)

solution

d)

compound

7.

__ is a pure substance containing two or more kinds of atoms.

a)

Element

b)

compound

c)

mixture

d)

solution

8.

Water is made up of hydrogen and oxygen, two elements that were chemically combined. This makes water a(n)

a)

atom

b)

compound

c)

element

d)

mixture

9.

What is aluminum (Al)?

a)

Element

b)

Compound

c)

Mixture

10.

What is table salt (NaCl)?

a)

Element

b)

Compound

c)

Mixture

11.

What is air?

a)

Element

b)

Compound

c)

Mixture

12.

What is an element?

a)

A substance that is made up of one type of atom and can't be reduced to simpler substances.

b)

A substance made of two or more different atoms chemically bonded to one another. They can only be destroyed by chemical processes.

c)

A material containing two or more elements or compounds that are in close contact and are mixed in any proportion. They can be separated by physical means.

13.

Which of the following is an example of an element?

a)

Cu (copper)

b)

H20 (water)

c)

cereal

d)

CO2 (carbon dioxide)

14.

Where can you find examples of elements?

a)

Dictionary

b)

Periodic table of compounds

c)

Periodic table of elements

d)

Your neighbor

15.

Which letter represents a mixture?

a)

D

b)

G

c)

E

d)

A

16.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

17.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
18.
Which group of the periodic table is composed of inert (not reactive)  gases?
a)
alkali metals
b)
alkaline earth metals
c)
halogens
d)
noble gases
19.
Which is an alkali metal?
a)
Magnesium
b)
Iron
c)
Sodium
d)
Europium
20.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
21.
Elements in a ..................have similar chemical properties.  
a)
period
b)
group
c)
row
22.

The letter, C, is a ... of carbon.

a)

Name

b)

Nickname

c)

Chemical Symbol

d)

Pseudonym

23.

Which of the following are physical properties of metal?

a)

Luster

b)

Conductivity

c)

Malleability

d)

Ductility

24.

True or False: The reactivity of metals tends to decrease as you move from left to right across the periodic table.

a)

True

b)

False

25.

Name this group: These metals are the most reactive.

a)
b)
c)
d)
26.

Name this group: These metals are the second most reactive.

a)
b)
c)
d)
27.

Name this group: These metals are the second most reactive.

a)
b)
c)
d)
28.

Name this group: These metals contain familiar metals such as gold, iron, and copper.

a)
b)
c)
d)
29.

Name this group: These metals, located near the nonmetals, are never found uncombined in nature.

a)
b)
c)
d)
30.

Find these groups: Locate Lanthanides and Actinides.

a)
b)
c)
d)
31.

Which of the following could be properties of nonmetals?

a)

Poor electrical conductivity

b)

Poor thermal conductivity

c)

Dullness

d)

Brittleness

32.

I am a metal


I am in group 2


I am in period 6


I am…

a)

Mo

b)

Re

c)

S

d)

Ba

33.

I am a nonmetal


I am in period 2


I am in group 16/6A

a)

Ba

b)

Si

c)

Ba

d)

O

34.

Find an element with similar chemical properties to Barium (Ba).

a)

Ca an Ra, because they are in the same group and have similar chemical properties.

b)

Cs and La, b/c they are in the same period number.

c)

Ca and Y, b/c they are 90 degree angle and have similiar properties.

35.

What kind of charge do electrons have?

a)

Positive charge

b)

No charge

c)

Negative charge

d)

Electric charge

36.

How do you find the number of neutrons?

a)

Mass number - Atomic number

b)

Protons + Neutrons

c)

Protons + Electrons

d)

Mass number + Atomic number

37.

Who organized the periodic table by atomic mass?

a)

Moseley

b)

J.J. Thomson

c)

Bohr

d)

Mendeleev

38.

What element is located at group 5, period 6?

a)

Hf

b)

Ta

c)

Mo

d)

Cr

39.

What are electrons in the outermost energy level called?

a)

Valence electrons

b)

Valence protons

c)

Valence neutrons

d)

Electron cloud

40.

What has both metal and nonmetal properties?

a)

Electrons

b)

Metalloids

c)

Protons

d)

Metals

41.

If an atom has an atomic mass of 27 and an atomic number of 13, how many neutrons does it have?

a)

13

b)

15

c)

14

d)

12

42.

The majority of elements on the periodic table are

a)

Nonmetals

b)

Metalloids

c)

Metals

43.

Where are Electrons located?

a)

In the nucleus

b)

In the electron cloud

c)

Next to the protons

44.

The number located at the top of an element is the ____.

a)

Mass number

b)

Neutrons

c)

Atomic number

d)

Symbol

45.

What are good conductors of heat?

a)

Nonmetals

b)

Metalloids

c)

Metals

46.

What has no charge?

a)

Proton

b)

Nonmetal

c)

Neutron

d)

Electron

47.

Who created the model that showed the electrons moved in a circular path around the nucleus?

a)

Niels Bohr

b)

Ernest Rutherford

c)

Henry Moseley

d)

Democritus

48.

How many electrons can the second energy level hold?

a)

2

b)

8

c)

18

d)

32

49.

Who organized the periodic table by atomic mass?

a)

James Chadwick

b)

Democirtus

c)

Mendeleev

d)

Moseley

50.
a)
Element
b)
Compound
c)
Mixture
51.
a)
Element
b)
Compound
c)
Mixture
52.
a)
Element
b)
Compound
c)
Mixture
53.
a)
Element
b)
Compound
c)
Mixture
54.
a)
Element
b)
Compound
c)
Mixture
55.

A pure substance that cannot be broken down into any other substance.

a)

Elements

b)

Compounds

c)

Mixtures

56.

Fe is the ___________________ for iron

a)

Letters

b)

Chemical Symbol

c)

Equation

57.

A(n) ______________ is formed when two or more elements chemically combine.

a)

Compound

b)

Element

c)

Mixture

58.

A ___________ is a combination of many different elements not chemically combined.

a)

Element

b)

Compound

c)

Mixture

59.
Which of these is a pure substance?
a)
bread
b)
table salt
c)
garden soil
d)
sea water
60.
Which of the following is NOT a pure substance?
a)
milk
b)
oxygen
c)
water
d)
carbon dioxide
61.
Which of the following is a way in which elements and compounds are similar?
a)
Elements and compounds are pure substances.
b)
Elements and compounds are both made up of different kinds of atoms.
c)
Elements and compounds can both be broken down by physical means.
d)
Elements and compounds are listed on the periodic table.
62.

Brass is a metal that is bright red and gold. It is formed by combining, not chemically, two elements, zinc and copper. Based on the information, how would brass be classified?

a)

an element

b)

compound

c)

mixture

d)

suspension

63.
This diagram represents a _____.
a)
pure substance that is a compound
b)
mixture of elements
c)
pure substance that is an element
d)
mixture of compounds
64.

A student placed a small chip of limestone into a hydrochloric acid solution, and carbon dioxide gas was released. The carbon dioxide provided evidence that

a)

only a physical change occurred.

b)

a chemical change occurred.

c)

only a loss of mass occurred.

d)

the formation of an element occurred.

65.

Humans absorb oxygen from the air they breathe in and exhale carbon dioxide gas, CO2. Carbon dioxide gas is

a)

an element made of carbon and oxygen atoms.

b)

a solution made of carbon and oxygen atoms.

c)

a compound of carbon and oxygen atoms.

d)

a mixture of carbon and oxygen atoms.

66.

What type of change is this?

a)

Chemical

b)

Melting

c)

Evaporation

d)

Condensation

e)

Sublimation

67.

What makes elements and compounds different from mixtures? Elements & compounds-

a)

have a constant composition (pure substances)

b)

are made of gases

c)

Will not change when heated

d)

conduct electric current

68.

In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?

a)

I

b)

II

c)

III

d)

IV

69.

Mixtures are different than pure substances because mixtures-

a)

have lower boiling points

b)

can be separated physically

c)

are less dense than pure substances

d)

contain only one type of atom

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