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Chemistry Marathon

Total questions: 81

Worksheet time: 48mins

Name
Class
Date
1.

Is the following a chemical or physical change ?


Sodium hydroxide dissolves in water

a)

Physical Change

b)

Chemical CHange

2.

Is the following a chemical or physical change ?


Hydrochloric acid reacts with sodium hydroxide to produce salt, water and heat

a)

Physical Change

b)

Chemical CHange

3.

Is the following a chemical or physical change ?


a pellet of sodium is sliced in two

a)

Physical Change

b)

Chemical CHange

4.

Is the following a chemical or physical change ?


water is heated and changed to steam

a)

Physical Change

b)

Chemical CHange

5.

Is the following a chemical or physical change ?


Potassium chlorate decomposes to potassium chloride and oxygen gas

a)

Physical Change

b)

Chemical CHange

6.

Is the following a chemical or physical change ?


Iron rusts

a)

Physical Change

b)

Chemical CHange

7.

Is the following a chemical or physical change ?


Ice Melts

a)

Physical Change

b)

Chemical CHange

8.

Is the following a chemical or physical change ?


Acid on limestone produces carbon dioxide gas

a)

Physical Change

b)

Chemical CHange

9.

Is the following a chemical or physical change ?


Sodium hydroxide dissolves in water

a)

Physical Change

b)

Chemical CHange

10.

Is the following a chemical or physical change ?


Wood rots

a)

Physical Change

b)

Chemical CHange

11.

Is this a chemical or a physical property?

(could be two properties)


Red color

a)

Physical Property

b)

Chemical property

12.

Is this a chemical or a physical property?

(could be two properties)


density

a)

Physical Property

b)

Chemical property

13.

Is this a chemical or a physical property?

(could be two properties)


flammability

a)

Physical Property

b)

Chemical property

14.

Is this a chemical or a physical property?

(could be two properties)


reacts with acid to form hydrogen

a)

Physical Property

b)

Chemical property

15.

Is this a chemical or a physical property?

(could be two properties)


Supports combustion

a)

Physical Property

b)

Chemical property

16.

Is this a chemical or a physical property?

(could be two properties)


bitter/taste

a)

Physical Property

b)

Chemical property

17.

Is this a chemical or a physical property?

(could be two properties)


melting point

a)

Physical Property

b)

Chemical property

18.

Is this a chemical or a physical property?

(could be two properties)


reacts with water to form a gas

a)

Physical Property

b)

Chemical property

19.

Is this a chemical or a physical property?

(could be two properties)


Reacts with a base to form water

a)

Physical Property

b)

Chemical property

20.

Is this a chemical or a physical property?

(could be two properties)


hardness

a)

Physical Property

b)

Chemical property

21.

Is this a chemical or a physical property?

(could be two properties)


boiling point

a)

Physical Property

b)

Chemical property

22.

Is this a chemical or a physical property?

(could be two properties)


can neutralize a base

a)

Physical Property

b)

Chemical property

23.

Is this a chemical or a physical property?

(could be two properties)


Luster

a)

Physical Property

b)

Chemical property

24.

Is this a chemical or a physical property?

(could be two properties)


Odor

a)

Physical Property

b)

Chemical property

25.

Is this a chemical or a physical property?

(could be two properties)


Red color

a)

Physical Property

b)

Chemical property

26.

Is this a chemical or a physical property?

(could be two properties)


Solubility

a)

Physical Property

b)

Chemical property

27.

Tell whether each of the following is an element or not an element.


H2O

a)

Element

b)

Not an Element

28.

Tell whether each of the following is an element or not an element.


Co

a)

Element

b)

Not an Element

29.

Tell whether each of the following is an element or not an element.

CO

a)

Element

b)

Not an Element

30.

Tell whether each of the following is an element or not an element.

Cu

a)

Element

b)

Not an Element

31.

Tell whether each of the following is an element or not an element.

CO2

a)

Element

b)

Not an element

32.

name the elements that are found in the following substance


C2OH3

a)

Sodium Chlorine

b)

Neon Silver Gold

c)

Carbon Potassium Mercury

d)

Carbon Oxygen Hydrogen

33.

name the elements that are found in the following substance


. NaCl

a)

Sodium Chlorine

b)

Neon Silver Gold

c)

Carbon Potassium Mercury

d)

Carbon Oxygen Hydrogen

34.

name the elements that are found in the following substance


NOCa

a)

Sodium Chlorine

b)

Neon Silver Gold

c)

Nitrogen Oxygen Calcium

d)

Carbon Oxygen Hydrogen

35.

name the elements that are found in the following substance


Ne4AgAu

a)

Sodium Chlorine

b)

Neon Silver Gold

c)

Nitrogen Oxygen Calcium

d)

Silicon Iron Cobalt

36.

name the elements that are found in the following substance


SiFe5Co

a)

Sodium Chlorine

b)

Neon Silver Gold

c)

Nitrogen Oxygen Calcium

d)

Silicon Iron Cobalt

37.

How many elements are in the following substance


CH3NaOAg

a)

5

b)

7

c)

9

d)

3

38.

How many elements are in the following substance


NaKMg7

a)

5

b)

7

c)

10

d)

3

39.

How many elements are in the following substance


RuFeNOC

a)

5

b)

7

c)

10

d)

3

40.

How many elements are in the following substance


ArNeHeON

a)

5

b)

7

c)

10

d)

8

41.

How many elements are in the following substance


BeLi8BCN

a)

13

b)

5

c)

7

d)

8

42.

Which of the following would not be a compound?

a)

C6H12O6

b)

(SO)4

c)

H2O

d)

Cl3

43.

The model in the picture represents

a)

A Compound

b)

Mixture

c)

Element

d)

Electrons

44.

How many elements are in the mixture pictured?

a)

7

b)

4

c)

3

d)

2

45.

An element is a ___ substance

a)

Mixed

b)

Pure

c)

Combined

d)

Human-made

46.

H2O is a

a)

Compound

b)

Mixture

c)

Element

47.

H4 is a

a)

Compound

b)

Mixture

c)

Element

48.

Peanut butter + Jelly

a)

Element

b)

Compound

c)

The best sandwich ever (Mixture)

49.

How many elements must be present for a compound to form?

a)

1

b)

2

c)

3

d)

Infinity

50.

Choose the correct definition


A(n) ____ is a pure substance that cannot be broken down into any other substance. It is represented on the periodic table by symbol. For example, O is Oxygen.

a)

compound

b)

mixture

c)

element

51.

Choose the correct definition


A(n) ______ is a combination of many different elements but they are not chemically combined and can be separated.

a)

compound

b)

mixture

c)

element

52.

Choose the correct definition


A(n)_______ is when one or more elements have been chemically combined together through a chemical reaction to form a new substance. An example is H2O (water). You can also count the capital letters. If there are 2 or more capital letters it is a compound.

a)

compound

b)

mixture

c)

element

53.

C4

a)

Element

b)

Compound

c)

Mixture

54.

O

a)

Element

b)

Compound

c)

Mixture

55.

Cl3

a)

Element

b)

Compound

c)

Mixture

56.

N2

a)

Element

b)

Compound

c)

Mixture

57.

Cl

a)

Element

b)

Compound

c)

Mixture

58.

C6H12O6

a)

Element

b)

Compound

c)

Mixture

59.

NaCl

a)

Element

b)

Compound

c)

Mixture

60.

CO2

a)

Element

b)

Compound

c)

Mixture

61.

HCl

a)

Element

b)

Compound

c)

Mixture

62.

H2O2

a)

Compound

b)

Element

c)

Mixture

63.

CaCO3

a)

Element

b)

Compound

c)

Mixture

64.

NaOH

a)

Element

b)

Compound

c)

Mixture

65.

NaCl + H2O

a)

Element

b)

Compound

c)

Mixture

66.

Sand + H2O

a)

Element

b)

Compound

c)

Mixture

67.

Chocolate Milk

a)

Element

b)

Compound

c)

Mixture

68.

Tea + Sugar

a)

Element

b)

Compound

c)

Mixture

69.

An element contains only 1 kind of __________.

a)

compound

b)

atom

c)

physical property

70.

The Periodic Table is a way of organizing__________.

a)

Elements

b)

Compounds

c)

water

71.

The Periodic Table uses __________ symbols

a)

pure

b)

compound

c)

chemical

72.

_ have atoms of two or more different elements that are bound together.

a)

Elements

b)

Compounds

c)

pure substances

73.

Compounds can be separated _____ but not _____

a)

Physically, Chemically

b)

Chemically, Physically

74.

Number 1 represents the elements

a)

Atomic Number

b)

Atomic Mass

c)

Chemical Symbol

d)

Name

75.

Blank number 2 represents the elements

a)

Atomic Number

b)

Atomic Mass

c)

Chemical Symbol

d)

Name

76.

Blank number 3 represents the elements

a)

Atomic Number

b)

Atomic Mass

c)

Chemical Symbol

d)

Name

77.

Blank number 4 represents the elements

a)

Atomic Number

b)

Atomic Mass

c)

Chemical Symbol

d)

Name

78.

Is this an element or a compound?


CO3

a)

Element

b)

Compound

79.

Is this an element or a compound?


Na

a)

Element

b)

Compound

80.

K

a)

Element

b)

Compound

81.

Is this an element or a compound?


Br14

a)

Element

b)

Compound

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