Free Printable Photosynthesis, Atomic structure, Energy, Reversible reactions

1.

Which gas is removed from the atmosphere during photosynthesis?

a)

hydrogen

b)

oxygen

c)

nitrogen

d)

carbon dioxide

2.

The openings that are found in the leaves of plants are called:

a)

Stomata

b)

Chlorophyll

c)

Xylem

d)

Chloroplast

3.

What is produced as a result of photosynthesis?

a)

glucose and chlorophyll

b)

water and light energy

c)

glucose and oxygen

d)

carbon dioxide and water

4.

Which of the following equations represents the overall chemical reaction for photosynthesis?

a)

6O₂+ 6H₂O → C₆H₁₂O₆+ 6O₂

b)

C₆H₁₂O₆ + 6H₂O→ 6O₂+ 6O₂

c)

6CO₂+ 6H₂O→ C₆H₁₂O₆+ 6O₂

d)

6O₂ + 6H₂O→ C₆H₁₂O₆ + 6CO₂

5.

Select the two reactants of photosynthesis

a)

Carbon Dioxide

b)

Oxygen

c)

Water

d)

Glucose

e)

Chlorophyll

6.

What is the function of chlorophyll??

a)

To absorb light

b)

To absorb heat

c)

To absorb water

d)

To absorb oxygen

7.

Plants do both photosynthesis and cellular respiration.

a)

True

b)

False

8.

How can photosynthesis be related to cellular respiration?

a)

What's made by one is needed for the other

b)

They both produce the same products

c)

They both need the same things

d)

They have nothing in common

9.

What is the chemical formula for glucose?

a)

C₆H₁₂O₆

b)

C₆H₆O₁₂

c)

C₁₂H₆O₁₂

d)

C₆O₂H₆

10.

How does carbon dioxide get into the leaves of a plant?

a)

It's absorbed by the roots

b)

It's made in a chemical reaction in the stem

c)

It enters through the stomata

d)

It goes through the flowers

11.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

12.

Subatomic particles with a positive charge

a)

neutrons

b)

atomic mass

c)

protons

d)

isotopes

13.

Measure mainly of the nuclear particles: protons + neutrons

a)

Subatomic Particles

b)

Atomic Number

c)

Atomic Mass

d)

Gluons

14.

Value representing the number of protons in an element

a)

Atomic Mass

b)

Mass Number

c)

Valence Electrons

d)

Atomic Number

15.

Subatomic particles that are neutral in charge

a)

Neutrons

b)

Protons

c)

Nucleus

d)

Electrons

16.

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

a)

Electron Shells

b)

Orbitals

c)

Electron Cloud

d)

Nucleus

17.

The smallest particle of an element.

a)

Element

b)

Molecule

c)

Atom

18.

What is the atomic number?

a)

35

b)

18

c)

17

d)

52

19.

How many protons and electrons does this element have?

a)

35

b)

18

c)

17

d)

52

20.

How many neutrons does Chlorine have?

a)

18

b)

17

c)

35

d)

52

21.

What is the atomic mass of Neon?

a)

10

b)

20

c)

30

22.

How many neutrons does calcium have?

a)

20

b)

40

c)

60

d)

0

23.

Where are electrons found?

a)

In neutrons

b)

In shells

c)

In the nucleus

d)

In protons

24.

How many electrons can fit in the first shell?

a)

1

b)

2

c)

3

d)

4

25.

Elements in group 7 have how many electrons in their outer shell?

a)

1

b)

3

c)

5

d)

7

26.

The period (row) number determines the

a)

number of electrons

b)

number of neutrons

c)

number of shells

d)

number of protons in the nucleus

27.

Why are atoms neutrally charged?

a)

Balanced numbers of protons and neutrons

b)

Equal numbers of electrons and protons

c)

The neutrons have no charge

d)

Atoms always have a positive charge

28.

Isotopes are atoms that have ...

a)

same number of protons but different number of electrons

b)

same number of neutrons but different number of protons

c)

same number of protons but different number of neutrons

d)

same number of electrons but different number of protons

29.

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

a)

20

b)

10

c)

5

d)

25

30.

There are two primary isotopes found in any sample of copper: copper-63 and copper-65. The isotope ⁶⁵Cu composes 69.2% of the sample and ⁶³Cu comprises the other 30.8%. Based on this data, what is the atomic mass of copper?

a)

29 amu

b)

63.546 amu

c)

64.4 amu

d)

63.6 amu

31.

Which alkali metal is most reactive out of the following

a)

rubidium

b)

potassium

c)

sodium

d)

lithium

32.

Which gas is released when the alkali metals react with water?

a)

hydrogen

b)

oxygen

c)

hydroxide

d)

carbon dioxide

33.

Which alkali metal is the least reactive?

a)

lithium

b)

sodium

c)

potassium

d)

rubidium

34.

What is formed when sodium reacts with water?

a)

sodium oxide and hydrogen

b)

sodium hydroxide and hydrogen

c)

sodium hydroxide and oxygen

d)

sodium hydroxide and carbon dioxide

35.

True or false: Alkali Metals are so soft they can be cut with a knife?

a)

True

b)

False

36.

Lithium, sodium, potassium- which alkali metal sets alight when in contact with water?

a)

lithium

b)

sodium

c)

potassium

37.

When you drop potassium to a bowl of water the colour of the universal indicator changes from

a)

green to purple

b)

purple to green

c)

red to green

d)

red to purple

38.

Which of the "Halogens" is found in liquid state at room temperature?

a)

Flourine

b)

Astatine

c)

Iodine

d)

Bromine

39.

Which of these elements are Halogens?

a)

Fluorine

b)

Helium

c)

Zinc

d)

Bromine

40.

What group are the Halogens?

a)

6.9

b)

7

c)

8

d)

3

41.

At room temperature, chlorine is...

a)

a yellow-green gas

b)

a brown gas

c)

a yellow-green liquid

42.

As you move down the group, halogens' reactivity...

a)

increases

b)

decreases

c)

doesn't change

d)

shows no trend.

43.

At room temperature, iodine is a....

a)

Gas

b)

Liquid

c)

Solid

44.

Which halogens are gases?

a)

iodine

b)

fluorine

c)

bromine

d)

chlorine

45.

Which halogen is the least reactive?

a)

iodine

b)

chlorine

c)

bromine

d)

fluorine

46.

Which halogen is the most reactive?

a)

iodine

b)

chlorine

c)

bromine

d)

fluorine

47.

Energy stored in objects being stretched or squashed...

a)

Elastic Potential Energy

b)

Kinetic Energy

c)

Chemical Energy

d)

Thermal Energy

48.

What type of energy is stored in food and fuel?

a)

Chemical

b)

Thermal

c)

Potential

d)

Calories

49.

Identify the energy transfer

a)

electrical to chemical to light

b)

kinetic to potential

c)

chemical to electrical to light

d)

light to sound

50.

Energy of motion is which type of energy?

a)

Potential

b)

Kinetic

c)

Sound

d)

Gravitational

51.

When an object is moved to a higher position, what name is given to the energy it then stores?

a)

Gravitational Potential

b)

Elastic

c)

Height

d)

Kinetic

52.

According to which law of energy, energy can't be created or destroyed?

a)

First law of motion

b)

The law of tacos

c)

Laws of Energy

d)

law of conservation of energy

53.

The picture demonstrates chemical energy transforming into ...(pick 3)

a)

radiant energy

b)

sound energy

c)

thermal energy

d)

kinetic energy

e)

potential energy

54.

Energy can be stored in different ways. The temperature of an object depends on the amount of energy it has in its __________ energy store.

a)

Thermal

b)

Chemical

c)

Kinetic

d)

Gravitational potential

e)

Elastic potential

55.

A student picks up a book off the floor and puts it on a high shelf. Which energy store has been filled /increased in this process?

a)

Thermal

b)

Chemical

c)

Kinetic

d)

Gravitational potential

e)

Elastic potential

56.

Energy is transferred __________ when a force moves an object through a distance.

a)

By electrical current

b)

By heating

c)

Mechanically (by forces)

d)

By radiation/waves (light, sound, etc.)

57.

An electric blender makes a smoothie

a)

Chemical to thermal

b)

Gravitational to kinetic

c)

Electrical to kinetic

d)

Electrical to sound

58.

An radio is playing a song

a)

Chemical to thermal

b)

Gravitational to kinetic

c)

Electrical to kinetic

d)

Electrical to sound

59.

A candle burns

a)

Chemical to thermal

b)

Gravitational to kinetic

c)

Electrical to kinetic

d)

Electrical to sound

60.

A car transfers 100 J of chemical energy in order to gain 50 J of kinetic energy. The efficiency of the car is

a)

20%

b)

0.5%

c)

50%

d)

200%

61.

Which of these equations is correct?

a)

$efficiency\ =\ \frac{useful\ energy\ transferred}{total\ energy\ transferred}$

b)

$efficiency\ =\ \frac{total\ energy\ transferred}{useful\ energy\ transferred}$

c)

$energy\ =\ efficiency\ \times100\%$

d)

$efficiency\ =\ \frac{wasted\ energy\ transferred}{total\ energy\ tranferred}$

62.

Total energy = 200J
Useful energy = 20J

Workout the efficiency of this lightbulb.
$efficiency\ =\ \frac{useful\ enegy}{total\ energy\ in}\ \times100$

a)

100%

b)

80%

c)

40%

d)

10%

63.

Total energy = 350J
Useful energy = 70J

Workout the efficiency of this iphoneX.
$efficiency\ =\ \frac{useful\ energy}{total\ energy\ in}\ \times100\%$

a)

100%

b)

80%

c)

40%

d)

20%

64.

At which point does the ball has the greatest gravitational potential energy (GPE)?

a)

A

b)

G

c)

D

d)

C

e)

G

65.

Which is the correct unit for expressing gravitational potential energy?

a)

Joule

b)

Newton

c)

m/s²

d)

meter

66.

Which is an example of conduction?

a)

a furnace heating the air in a school

b)

an ice cube melting in a person’s hand

c)

a pot of water on a stove boiling

d)

the sun heating water in a swimming pool

67.

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

a)

hotter to colder

b)

colder to hotter

c)

hotter to hotter

d)

colder to colder

68.

A material that reduces the flow of heat is a(n)

a)

conductor

b)

insulator

c)

metal

d)

radiator

69.

What is the definition of CONDUCTION?

a)

When heat is transferred from objects like rays of light or electromagnetically.

b)

a hot liquid or air that expands, becomes less dense, and rises or becomes more dense, and sinks.

c)

When heat transfers from objects that are touching.

d)

When heat transfers through the heater or AC in your house.

70.

What type of reactions can able to change products back to the their original form?

a)

Reversible reactions

b)

Irreversible reactions

c)

Combustion reactions

d)

Combination reactions

71.

Which of the following combinations is correct?

a)

reversible ⇌

irreversible →

b)

reversible ←

irreversible →

c)

reversible ⇌

irreversible ←

d)

irreversible ⇌

reversible →

72.

In an exothermic reaction, heat is ...

a)

taken in

b)

given out

73.

If a reversible reaction is exothermic in the forward direction, it will be ...

a)

exothermic in the reverse direction

b)

endothermic in the forward direction too

c)

endothermic in the reverse direction

d)

not involve energy in reverse direction

74.

Dynamic equilibrium is reached when...

a)

Mass of reactants

=

Mass of products

b)

Rate of forward reaction

=

Rate of reverse reaction

c)

Speed of reactants

=

Speed of products

d)

Number of reactants

=

Number of products

75.

When dynamic equilibrium is achieved, this means that...

a)

The concentration of the reactants and products will not change

b)

The reaction will have finished

c)

The rate of reaction will be the fastest

d)

The reactants and products will have been fully used up

76.

Dynamic equilibrium can only happen...

a)

For IRREVERSIBLE reactions in an OPEN system

b)

For IRREVERSIBLE reactions in a CLOSED system

c)

For REVERSIBLE reactions in an OPEN system

d)

For REVERSIBLE reactions in a CLOSED system

77.

A substance that increases speed of chemical reaction without being being changed is called:

a)

Catalyst

b)

Acid

c)

Base

d)

pressure

78.

Increasing the temperature of the reactants can...

a)

Slow collision frequency

b)

Allow less effective collision between the particles

c)

Cause particles to lose speed

d)

Increase the frequency of collisions between particles, thus increasing the rate

79.

Why does a higher concentration increase the rate of reaction?

a)

it increases the amount of reactants

b)

it lowers the activation energy

c)

it increases the energy of particle collisions

d)

it increases the frequency of particle collisions

80.

How does a catalyst work in speeding up a reaction?

a)

By lowering the activation energy or reaction

b)

by giving them more energy

c)

by making them more available

81.

Why does a higher temperature increase the rate of a reaction?

a)

it increases both the frequency and energy of particle collisions

b)

it only increases the frequency of particle collisions

c)

it only increases the energy of particle collisions

d)

it reduces the activation energy of the reaction

82.

The ______________is the minimum energy needed for a reaction to take place between reactants.

a)

Carbonic energy

b)

Activation energy

c)

Plutonic energy

d)

Energi Gaib

83.

Why don't all collisions between particles cause a reaction?

a)

the particles also need to collide with a catalyst

b)

not all the particles collide with enough energy

c)

not all the particles collide at a high enough temperature

d)

the particles need to collide with each other twice

Photosynthesis, Atomic structure, Energy, Reversible reactions

Total questions: 83

Worksheet time: 49mins

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