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chemistry + biology

Total questions: 76

Worksheet time: 1hrs 13mins

Name
Class
Date
1.
How many milliliters are in a liter?
a)
1
b)
10
c)
100
d)
1000
2.

What is an example of a unit for speed?

a)

m/s

b)

mph

c)

km/hr

d)

All of the above

3.

What is a unit of measurement for time?

a)

Seconds

b)

Hours

c)

Days

d)

All of the above.

4.

What unit do we use for force?

a)

Newton

b)

grams

c)

kilograms

d)

pounds

5.
The amount of space occupied by an object
a)
Volume
b)
Mass
c)
Density
d)
Time
6.
The amount of matter that makes up an object
a)
Mass
b)
Density
c)
Volume
d)
Weight
7.
The extent of an object from end to end
a)
Length
b)
Mass
c)
Time
d)
Weight
8.
How do you measure the volume of an irregular shaped object?
a)
length times width times height
b)
water displacement method
c)
using a pan balance
d)
using a triple beam balance
9.
What do you use to measure the mass of an object?
a)
a mass balance or electronic balance
b)
water displacement method
c)
a metre stick
d)
length times width times height
10.

Cells that lack membrane bound organelles such a nucleus are called

a)

prokaryotic

b)

eukaryotic

11.

Bacteria are single-celled microscopic organisms

a)

true

b)

false

12.

Type of medicine used to kill bacterial infections.

a)

vaccine

b)

antibiotics

c)

pasteurization

d)

vitamins

13.

Nitrogen fixing bacteria help put nutrients back into the soil and help plants grow.

a)

true

b)

false

14.
Which statement about bacteria is true?
a)
All bacteria are prokaryotes
b)
All bacteria are eukaryotes
c)
All bacteria are autotrophs
d)
All bacteria are heterotrophs
15.
Bacteria come in all of the following shapes EXCEPT which?
a)
spiral
b)
rod-like
c)
rectangular
d)
spherical
16.
Bacteria have a cell membrane
a)
True
b)
False
c)
Some do, some don't
d)
Only in certain temperature conditions
17.
Bacteria reproduce by...
a)
sexual reproduction only
b)
asexual reproduction only
c)
usually asexual, sometimes sexual reproduction
d)
a unique type of reproduction called endosporosis
18.
Reasons that viruses are considered to be nonliving is because
a)
They are not cellular
b)
They cannot reproduce on their own
c)
They cannot make proteins
d)
all of the above
19.

What is the name of flower part #1 ?

a)

anther

b)

pistil

c)

filament

d)

peduncle

20.

This is the stalk of the stamen?

a)

anther

b)

filament

c)

peduncle

d)

sepal

21.

This contains the male parts of the flower?

a)

stamen

b)

pistil

c)

sepal

d)

style

22.

This is the flower stalk?

a)

filament

b)

sepal

c)

peduncle

d)

receptacle

23.

The grains that contain the male sex cell?

a)

Anther

b)

pollen

c)

ovule

d)

petal

24.

This part of the plant bears pollen?

a)

anther

b)

filament

c)

pistil

d)

stamen

25.

This contains all the female parts of the flower?

a)

pistil

b)

stamen

c)

stigma

d)

sepal

26.

This is the stalk of the pistil?

a)

style

b)

stigma

c)

sepal

d)

ovary

27.

This is the base of the pistil, matures to become fruit?

a)

ovule

b)

ovary

c)

style

d)

stigma

28.
Why are flowers very colorful (and why do they produce odor?)
a)
So people buy them
b)
To make gardens look good
c)
To attract pollinators
d)
To attract sunlight
29.
What is a pollinator?
a)
Animal that moves pollen from plant to plant
b)
Animal that eats pollen
c)
A plant that makes pollen
d)
A plant that does not make pollen
30.
Male reproductive parts of a plant....
a)
Petals and ovary
b)
Ovary and ovule
c)
Anther and filament
d)
Stigma and style
31.
How does pollen reach the ovule?
a)
Stigma --> Style
b)
Style --> stigma
c)
Ovary --> stigma
d)
Ovary --> style
32.
Fertilization is....
a)
Egg and Sperm cells join
b)
Sperm Cells
c)
Egg Cells
d)
Pollination
33.
After fertilization the ovule will....
a)
Be carried away by a pollinator
b)
Be blown away by the wind
c)
Will grow into a new plant
d)
Develop into a fruit that contains seeds
34.
After fertilization the ovule will....
a)
Be carried away by a pollinator
b)
Be blown away by the wind
c)
Will grow into a new plant
d)
Develop into a fruit that contains seeds
35.

The pistil (or carpel) is the _______ part of the flower

a)

Male

b)

Female

36.

The arrow points to the stalk that holds the anther up. This structure is called ____________

a)

stigma

b)

style

c)

anther

d)

filament

37.

Seed structure that grows become roots

a)

radicle

b)

plumule

c)

cotyledon

d)

endosperm

38.

Seed structure that grows become stem and leaves

a)

radicle

b)

plumule

c)

cotyledon

d)

endosperm

39.

Seed structure that stores nutrients

a)

radicle

b)

plumule

c)

testa

d)

endosperm

40.

Seed structure that protects seed

a)

radicle

b)

plumule

c)

testa

d)

endosperm

41.

Monocots seed

a)

corn

b)

bean

c)

wheat

d)

sugarcane

42.

Dicots seed

a)

bean

b)

peanut

c)

cucumber

d)

corn

43.

Conditions for germination are sunlight, air and (a)  

44.

The purpose of seed dispersal is for the seeds to __________.

a)

germinate at the same time

b)

move to the same place and grow

c)

move further away from the parent plant

d)

compete with one another for minerals in the soil

45.
My pod splits open and seeds are thrown out with a force. What is likely my dispersal method?
a)
wind
b)
water 
c)
animals
d)
explosive action
46.
What is the symbol of the element: gold?
a)
Ag
b)
As
c)
Ap
d)
Au
47.

Choose the elements whose valency is 2+

a)

Oxygen

b)

Argon

c)

Sodium

d)

Beryllium

48.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
49.
What is the left part of a chemical equation called?
2H2 + O2 --> 2H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
50.
What is the total number of atoms present in 5Na3PO4
a)
5
b)
40
c)
55
d)
8
51.
Is the following equation balanced?...
Al + O2 --> 2Al2O3
a)
Yes!
b)
No!
52.
Is the following equation balanced?
2C2H2 + 5O2 --> 4CO2 + 2H2O
a)
yes
b)
no
53.
Which of the following equations are correctly balanced?
a)
12CO2 +H2O --> C6H12O6 + O2
b)
CO2 + 9H2O --> C6H12O6 + O2
c)
CO2 + H2O --> 3C6H12O6 + O2
d)
6CO2 + 6H2O --> C6H12O6 + 6O2
54.
Is the following reaction balanced?
NaHCO3 --> Na2CO3 + H2O + CO2
a)
yes
b)
no
55.

Balance the following equation:

___ H2+ ___ O2→___ H2O

a)

1, 1, 3

b)

2, 2, 2

c)

1, 2, 1

d)

2,1, 2

56.

Balance the following equation:

___ Mg+ ___ O2→___ MgO

a)

1, 1, 3

b)

2, 1, 2

c)

1, 2, 1

d)

2, 2, 2

57.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
58.
How many elements are in C6H12O6?
a)
1
b)
2
c)
3
d)
4
59.
Element or compound?
H2O
a)
element
b)
compound
60.
How many HCl molecules do you need to balance this equation? 
Mg +  __HCl --->  MgCl2 + H2
a)
1
b)
2
c)
3
d)
4
61.

An element has 5 valence electron , what is its valency?

a)

4

b)

3

c)

2

d)

1

62.

An atom has four shells and 19 protons in its atom , what is its valency?

a)

1

b)

2

c)

3

d)

4

63.

what is valency of the given element?

a)

1

b)

2

c)

3

d)

4

64.

What is the chemical formula of Magnesium chloride?

a)

MgCl

b)

MgCl2

c)

MgC

d)

MgC2

65.

What is the name of this chemical, H2SO4?

a)

Hydrogen sulfate

b)

Sulfuric acid

c)

Sulfate

d)

Sulfate hydrogen

66.

What is the formula of nitric acid?

a)

H2SO4

b)

HNO3

c)

HCl

d)

hno3

67.

How many atoms are there in the compound MgCO3?

a)

3

b)

4

c)

5

d)

6

68.
Which is the correct formula for:
 three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
69.
Which is the correct formula for:
one carbon (C)
two oxygen (O)
a)
CO2
b)
CO
c)
C2O
d)
2CO
70.
How many Hydrogen are in 4H2O?
a)
6
b)
8
c)
2
d)
4
71.

The formula of calcium hydroxide is

a)

CaOH

b)

Ca(OH)2

c)

Ca(OH)3

72.

The formula of sodium carbonate is

a)

NaCO3

b)

Na(CO3)2

c)

Na2CO3

73.

The formula of ammonium ion is

a)

NH3

b)

NH3+

c)

NH4

d)

NH4+

74.

What are valence electrons?

a)

The total number of electrons in an atom

b)

The number of electrons in the outermost shell

c)

The number of electrons in the second shell

d)

The number of protons in the outermost shell

75.
a)
2
b)
8
c)
3
d)
13
76.
How many valence electrons are in an atom of Ar?
a)
2
b)
8
c)
4
d)
1

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