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WorksheetsIntroduction to S3
Total questions: 28
Worksheet time: 16mins
Name
Class
Date
1.
When a certain amount of solvent cannot hold any more solute it is called a ________ solution.
a)
Diluted
b)
Saturated
2.
You are given a small beaker of solution at room temp. You add a bit of solute to the solution and it dissolves. The solution was:
a)
saturated
b)
unsaturated
c)
concentrated
d)
warm
3.
What is a solvent?
a)
The substance that does the dissolving in a solution.
b)
The substance that is being dissolved in a solution.
c)
The mixing of different substances.
d)
The process in which neutral molecules lose or gain electrons
4.
What is a substance that is dissolved in another substance?
a)
solution
b)
solute
c)
solvent
d)
compound
5.
Water (H2O) freezing is an example of:
a)
A chemical change
b)
A physical change
6.
A chemical change always results in the formation of a:
a)
gas
b)
solid
c)
new substance
d)
new state of matter
7.
You drop two Alka-Seltzer tablets in a glass of water and immediately see bubbles coming up through the water. They probably indicate:
a)
A change of color
b)
Formation of a gas
c)
A change in temperature
d)
Formation of a precipitate
8.
Is Iron (Fe) an element or a compound?
a)
Element
b)
Compound
9.
Which of the following represents an element?
a)
H2O
b)
H2
c)
NaCl
d)
CaCO3
10.
Which of the following is not a compound?
a)
HCl
b)
Cl2
c)
NaCl
d)
CO2
11.
What is H2SO4
made up of?
made up of?
a)
2 hydrogen, 1 sulfur, 4 oxygen
b)
1 hydrogen, 2 sulfur, 4 oxygen
c)
2 hydrogen & 4 sodium
d)
1 hydrogen & 6 sodium
12.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements
d)
Mixture of Compounds
13.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements and Compounds
d)
Mixture of Elements
14.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Elements & Compounds
d)
Mixture of Compounds
15.
Classify the picture with the correct label.
a)
Compounds
b)
Mixture of Elements
c)
Mixture of Compounds
d)
Mixture of Elements & Compounds
16.
Classify the picture with the correct label.
a)
Mixture of Elements
b)
Compound
c)
Mixture of Compounds
d)
Element
17.
Classify the picture with the correct label.
a)
Element
b)
Compound
c)
Mixture of Compounds
d)
Mixture of Elements
18.
Which of the following describes a precipitate?
a)
a liquid forms when a block of metal is heated
b)
a solid forms when one liquid is poured into another
c)
a gas forms when a solid is placed in a liquid
d)
bubbles form when an acid is poured on a rock
19.
Which is NOT an indication of a chemical change?
a)
temperature change
b)
formation of a precipitate
c)
shape change
d)
production of light
20.
A clear liquid from a flask is poured into another clear liquid in a beaker. Which of the following results of this procedure would indicate a new substance was formed?
a)
The level of the substance in the beaker is higher after the other liquid is added.
b)
A yellow solid forms and then settles to the bottom of the beaker.
c)
Small white crystals are left behind in the flask that held the first liquid.
d)
The mass of the combined liquids is greater than either original liquid.
21.
Which of the following is an example that includes evidence of a chemical reaction?
a)
A sample of zinc is placed in water and it settles to the bottom
b)
A solid block of ice is heated and it completely melts into a liquid.
c)
Sugar that is burned gives off an odor and turns brown and then black.
d)
A tomato is placed into a blender and chopped up into smaller pieces.
22.
Four students performed four different investigations by combining different substances. Which of the observations is most indicative of a chemical reaction?
a)
investigation 1
b)
investigation 2
c)
investigation 3
d)
investigation 4
23.
In a container, a solid consisting of clear crystals is combined with a blue liquid and the following observations are obtained: How many of the listed observations indicate a new substance was formed?
a)
1
b)
2
c)
3
d)
4
24.
The vertical (up and down) columns in the Periodic Table are called
a)
groups
b)
towers
c)
periods
d)
atomic numbers
25.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
26.
Sodium (Na) is found in group
a)
1
b)
2
c)
3
d)
4
27.
The horizontal (side to side) rows in the Periodic Table are called
a)
groups
b)
families
c)
periods
d)
atomic numbers
28.
These are found on the Periodic Table.
a)
Compounds
b)
Elements
c)
Mixtures
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