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Science Review 1 (Life and Physical Science 1)

Total questions: 60

Worksheet time: 50mins

Name
Class
Date
1.

A mixture of two gases in a rigid container at 5°C. The particle diagram shows a mixture of neon gas and argon gas. The temperature was increased above the boiling point of each gas. Which diagram shows what would happen to the gas mixture?

a)
b)
c)
d)
2.

A person who is homozygous for a trait can have a genotype of....

a)

AA, Aa

b)

Aa, aa

c)

AA, aa

d)

aa

3.

If "B" represents brown hair, and "b" represents blond hair, what will the genotype be for a homozygous brown haired person?

a)

BB

b)

Bb

c)

bb

d)

BrBl

4.

P= purple petals and p= white petals. What genotype(s) would result in purple petals?

a)

pp

b)

Pp, pp

c)

PP, Pp

d)

PP, pp

5.

What is the missing pairing?

a)

AA

b)

Aa

c)

aa

6.

The term that relates to physical characteristics that are studied in genetics.

a)

traits

b)

offspring

c)

generations

d)

hybrids

7.

A mutation is

a)

any change that is harmful

b)

any change in a gene or chromosome

c)

any change that is helpful

d)

any change in the phenotype

8.
In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?
a)
Tall = T
Short = S
b)
Tall = T
Short = t
c)
Tall = t
Short = T
d)
Tall = TT
Short = tt
9.
What are the possible genotypes for this cross?
(Click the picture to see it without the text)
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
10.

B=Brown fur

b=tan fur

What percent of the offspring would be tan when you cross BbxBb?

a)

75%

b)

25%

c)

50%

d)

100%

11.

What are the three main groups of the periodic table?

a)

groups

b)

metal

c)

nonmetals

d)

metalloids

e)

periods

12.

What is the name of the element? (Periodic table will be needed)

a)

sodium

b)

magnesium

c)

vanadium

d)

carbon

13.

How many protons and electrons does nickel have?

a)

28

b)

58.69

c)

59

d)

29

14.
Two elements chemically bonded form
a)
element
b)
compound
c)
mixture
d)
solutions
15.
Each column in the periodic table is called a 
a)
period
b)
group
c)
cluster
d)
unit
16.
How many neutrons are in a Gold atom?
a)
79
b)
196
c)
118
d)
275
17.
How many electrons does a Copper atom have?
a)
63
b)
29
c)
92
d)
34
18.
The electrons of an atom are found...
a)
in the outer "cloud" surrounding the atom.
b)
in the nucleus of the atom.
c)
in the cloud and in the nucleus.
19.
What is the atomic mass equal to?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
20.

A student is studying a mystery substance. It breaks easily. It has a very dull luster. It doesn't conduct any electricity. What is the most likely substance this is?

a)

metal

b)

nonmetal

c)

metalloid

d)

gas

21.
Most of the mass of an atom is found it its _____.
a)
electron cloud
b)
nucleus
c)
atomic number
d)
empty space
22.
Which is an electron?
a)
A
b)
B
c)
C
23.
Which is a proton?
a)
A
b)
B
c)
C
24.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
25.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
26.
An atom of the element with atomic number 6 always has _____.
a)

six protons

b)
an atomic mass of six
c)

six neutrons

d)

six electrons

27.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
28.
How many electrons does potassium K contain? (click to see image)
a)
19
b)
39
c)
20
d)
40
29.

What element is this? (Periodic table will be needed)

a)
Helium
b)
Hydrogen
c)
Argon
d)
Silver
30.

Which element is represented? (Periodic table will be needed)

a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
31.

Which element is represented? (Periodic table will be needed)

a)
Beryllium
b)
Boron
c)
Barium
d)
Bromine
32.
What identifies the element?
a)
Protons
b)
Neutrons
c)

Electrons

d)
Nucleus
33.

Which of the following correctly lists the particles of an atom and their charges?

a)

protons (-), neutrons (neutral), electrons (+)

b)

protons (neutral), neutrons (+), electrons (-)

c)

protons (+), neutrons (-), electrons (+)

d)

protons (+), neutrons (neutral), electrons (-)

34.

The atomic number for this element is _________.

a)

26

b)

55.845

c)

56

d)

30

35.

Radium has _________ neutrons.

a)

128

b)

138

c)

139

d)

129

36.
What is the Law of Conservation of Mass?
a)
It states that no matter can be created or destroyed.
b)
It states that no energy can be created or destroyed.
c)
It states that matter can be created or destroyed.
d)
It states that no sound can be created or destroyed.
37.
What is a coefficient?
a)
The small number on the right of the chemical symbol.
b)
The large number in front of a chemical formula.
c)
The number in between the chemical symbols.
d)
The number behind a chemical formula.
38.
What is the part of the chemical equation in green called? 
Fe + S --> FeS
a)
products
b)
reactants
c)
yield
d)
chemical formula
39.
What is the little number after an element in a chemical equation called.
Example: H2
a)
Coefficient 
b)
Subscript
c)
Atom
d)
Equation
40.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
41.
Which problem is balanced?
(Check ALL answers)
a)
PbO2 + 2H2
b)
SO2 + H20 --> H2SO4
c)
2Na + 2H2O --> 2NaOH + H2
42.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
43.
Element or compound?
H2O
a)
element
b)
compound
44.
Is this balanced?
Al + O2 → 2Al2O3
a)
Yes
b)
No
45.

Identify ALL of the chemical changes

a)

Boiling water

b)

Burning a marshmallow

c)

Fireworks going off

d)

Cutting your hair

e)

Dying your hair

46.

The equation below shows a reaction between sodium (Na) and water (H2O).

2Na (s) + H2O (l) → 2NaOH (aq) + H2 (g)

Which best explains why the equation is not balanced?

a)

There is too much sodium in the reactants.

b)

There is not enough water in the reactants.

c)

There is too much hydrogen gas in the products.

d)

There is not enough sodium hydroxide in the products.

47.

Which best explains why the total mass of the product(s) would be less than the total weight of the reactant(s) after a chemical reaction?

a)

A physical change occurred.

b)

Atoms involved in the reaction lost mass

c)

Precipitates were created in the new solution

d)

Gases were released into the atmosphere.

48.

If 100 grams of vinegar and 5 grams of baking soda are poured in a container, a small amount of gas will be produced. What will the final mass of the products be if the gas is trapped in the container?

a)

100 g

b)

104 g

c)

105 g

d)

110 g

49.

An ice cube is put into a heated pan. What will most likely happen to the molecules in the ice as the ice is heated?

a)

The molecules will begin to move slower.

b)

The molecules will begin to move faster.

c)

The molecules will begin to increase in density.

d)

The molecules will begin to condense in air.

50.

John and Lisa collected a sample of ocean water and placed it in a jar. Within a couple of days, the water had evaporated and salt was visible at the bottom of the jar. This is an example of a

a)

physical change

b)

chemical change

c)

new substance being formed

51.
Balance this equation:
P4+O2  -->  P2O3
a)
3 P4+ O2 --> 2 P2O3
b)
 P4+ O2 --> 2 P2O3
c)
 P4+ 3 O2 --> 2 P2O3
d)
 P4+ 2 O2 --> 3 P2O3
52.
Balance this equation...
HgO --> 2Hg + O2
a)
It is balanced 
b)
2HgO --> Hg + O2
c)
2HgO --> 2Hg + O2
d)
I don't know...Oh well!
53.
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
a)
4Fe + 3O2 -> 2Fe2O3
b)
2 Fe + 3O2 -> Fe2O6
c)
4 Fe + O6 -> 2Fe2O3
d)
None of the options are correctly balanced.
54.
A sealed test tube containing 8 grams of iron filings and 5 grams of sulfur is heated until the material in the test tube glows bright red.  What is the mass of products? 
a)
Mass is less than 13 grams
b)
Mass is equal to 13 grams
c)
Mass is greater than 13 grams
d)
Mass cannot be measured
55.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
56.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
57.
a)
b)
c)
d)
58.
a)

What is the color of the molecule?

b)

What is the shape of the molecule?

c)

What elements are present in the molecule?

d)

How many atoms are present in the molecule?

59.

Which diagram correctly represents the mass of one of the chemical reactions?

a)
b)
c)
d)
60.

Students have been studying air quality. The teacher provides them with particle diagrams of the components of five air samples. Which three diagrams contain compound molecules?

a)
b)
c)
d)
e)

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