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Science at home review

Total questions: 30

Worksheet time: 21mins

Name
Class
Date
1.
What is the most likely pH of a tube of toothpaste?
a)
3
b)
5
c)
7
d)
10
2.
Which of these substances is acidic?
a)
tap water
b)
lemon
c)
ammonia
d)
baking soda
3.
Which is the stronger acid?
a)
pH 1
b)
pH 4
c)
pH 8
d)
pH 13
4.
What is the range of pH values in an acidic solution?
a)
0-6
b)
8-14
c)
15-239058204958
d)
pH = 7
5.

The substance being dissolved is called the ________

a)

solvent

b)

solid

c)

solute

d)

solvate

6.

When no more solute dissolves the solution is _________

a)

supersaturated

b)

unsaturated

c)

saturated

d)

supercalifragilisticexpialidocious

7.

Combination of two or more different kinds of substances that keep their own physical properties and can be easily separated.

a)

Solution

b)

Mixture

c)

Solubility

d)

Miscibility

8.
What does this picture represent? 
a)
solid
b)
liquid 
c)
gas
d)
plasma
9.
What are the three states of matter?
a)
Rock, Brick, Shoe
b)
Solid, Liquid, Gas
c)
Liquid, Water, Soda
d)
Rain, Sleet, Snow
10.

State of matter with a definite shape and definite volume.

a)

solid

b)

liquid

c)

gas

11.

Which group of the periodic table are alkali metals found in?

a)

Group 1

b)

Group 2

c)

Group 7

d)

Group 8

12.

Which of the followings is the most reactive alkali metal in water?

a)

Lithium

b)

Sodium

c)

Potassium

d)

Hydrogen

13.

What happens to the atomic radius of the alkali metals as you move down the group?

a)

increases

b)

decreases

c)

no change

d)

first increases than decreases

14.

Melting ice

a)

physical change

b)

chemical change

15.

Burning wood

a)

physical change

b)

chemical change

16.

What happens when a new substance is produced during a reaction?

a)

physical change

b)

chemical change

17.

rusty nail

a)

physical change

b)

chemical change

18.
These contain only one kind of atom. 
a)
element 
b)
compound 
c)
mixture 
d)
water 
19.
Carbon Dioxide is a ______ 
a)
compound 
b)
element 
c)
mixtures 
d)
Battle of Bunker Hill 
20.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
21.
This picture represents which of the following?
a)
element
b)
compound
c)
mixture of elements
d)
mixture of compounds
22.
The physical separation of mixtures into individual components is..
a)
chromatography
b)
opacity 
c)
latent
d)
trace evidence 
23.
Two or more substances that are mixed together but not chemically combined is a ___
a)
compound
b)
mixture
c)
keratin
d)
chromatography
24.

Ink can be separated by a method of -----------------------------------------------

a)

distillation

b)

filtration

c)

chromatography

d)

sedimentation

25.
chromatography separates the mixture of dyes on the basis of their ----------------------------
a)
density
b)
solubility
c)
gravity
d)
boiling point
26.
Which of these is a property of metals?
a)
It's malleable
b)
It can't conduct electricity
c)
They are used in food
d)
It's very brittle
27.
Which of the following is NOT a characteristic of most metals?
a)
Brittle
b)
Good conductor
c)
Ductile
d)
Malleable
28.
Describe what luster means
a)
How an object reflects light
b)
How soft an object is
c)
If an object floats
d)
If an object can be dug out of the earth.
29.
Unlike non-metals, most metals tend to —
a)
conduct electricity and heat well.
b)
be gases at room temperature.
c)
break easily when hammered.
d)
have less luster and shine.
30.
Iron is a good conductor, malleable and magnetic. What type of element is Iron? 
a)
Metal
b)
Nonmetal
c)
Metalloid

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