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WorksheetsEWMS: Properties of Matter
Total questions: 40
Worksheet time: 20mins
Name
Class
Date
1.
If an element has an atomic number of 9 and an atomic mass of 19, how many protons does this element have?
a)
9
b)
10
c)
19
d)
20
2.
Which of the following is an example of an endothermic reaction?
a)
cake baking
b)
candle burning
c)
firework exploding
d)
a piece of wood smoldering
3.
Which label points to the part of an atom with a negative charge?
a)
A
b)
B
c)
C
d)
D
4.
Phenolphthalein is pink in the presence of a base and colorless if a base is not present. A student injected a solution of a base containing phenolphthalein into a lemon. When she cut the lemon open, there was no pink color inside. Explain what happened.
a)
The acid in the lemon neutralized the base
b)
The base changed into an acid insite the lemon
c)
The phenolphthalein stopped working inside the lemon
d)
The lemon absorbed the base but no the phenolphthalein
5.
In our bodies, stomach acid helps break down food and release nutrients. Sometimes people take antacid for what reason?
a)
to make stomach more acidic
b)
to make stomach less basic
c)
to neutralize their stomach acid
d)
to release more nutrients from their food
6.
An acidic solution goes through a 100-fold decrease in hydronium ion concentration. Which of the following intervals could represent this change?
a)
0-1
b)
2-4
c)
8-10
d)
9-12
7.
Which observation is a sign of a chemical change?
a)
a rotting potato gives off a bad smell
b)
a melting block of ice leaves a large puddle
c)
a cloud changes shape when blown by wind
d)
a statue breaks when it falls onto the floor
8.
What is a solution that has a relatively low amount of solute called?
a)
saturated
b)
concentrated
c)
dilute
d)
suspended
9.
How is the current understanding of the atomic structure different from Thompson and Rutherford's model?
a)
Electrons move only in the current model of the atom.
b)
Electrons are fixed only in the current model of the atom.
c)
Electrons travel in orbits only in the current model of the atom.
d)
Electrons travel in the electron cloud only in the current model of the atom.
10.
Which of the following forms during a neutralization reaction?
a)
salt
b)
acid
c)
base
d)
neutral
11.
Trini adds 10 g of baking soda to 100g of vinegar. The mixture begins to bubble. When the bubbling stops, Trini finds the mass of the resulting mixture. She determines the mass is 105g. Why has the mass changed?
a)
a gas has formed and left the mixture
b)
vinegar evaporated during the experiment
c)
mixtures are always less massive than their parts
d)
mass was destroyed when vinegar reacted with baking soda
12.
Which is a property of a metal that nonmetals do not typically have.
a)
dull (not shiny)
b)
poor conductors of electricity
c)
good conductors of heat
d)
low density
13.
Where are metals found on the periodic table.
a)
to the right of the "zigzag line" of metalloids
b)
to the left of the "zigzag line of metalloids"
c)
in the last group of the periodic table
d)
They are part of the "zigzag line
14.
Fluorine has one less valence electron than Neon on the periodic table. What can you infer about Fluorine's location on the periodic table.
a)
Fluorine is in the same group as Neon
b)
Fluorine is in group one on the periodic table
c)
Fluorine and Neon must be in different periods
d)
Fluorine and Neon must be in different gorups
15.
Which of the following elements are in the same group?
a)
K and Ca
b)
Be and Mg
c)
H and He
d)
F and Ne
16.
How many Valence Electrons are shown in the Bohr model
a)
8
b)
18
c)
22
d)
2
17.
Which of the following instances is an example of a chemical change?
a)
cutting the grass
b)
burning a piece of paper
c)
tearing a piece of paper
d)
melting an ice cube.
18.
Aluminum combines with oxygen to form Aluminum Oxide, Al2O3. Which of the following shows a balanced chemical equation to this reaction?
a)
Al + O --> Al2O3
b)
Al + O2 --> Al2O3
c)
2Al + O2 --> Al2O3
d)
4Al + 3O2 --> 2Al2O3
19.
How many atoms of Oxygen are represented by the following formula: 3H2O2
a)
3
b)
2
c)
6
d)
5
20.
If Lye has a pH of 14, it is considered...
a)
slightly basic
b)
strongly basic
c)
slightly acidic
d)
strongly acidic
21.
The red number in the following equation is known as a:
2Mg + O2 --> 2MgO
2Mg + O2 --> 2MgO
a)
coefficient
b)
subscript
c)
yield
d)
product
22.
What are the 2 parts of a solution?
a)
salt and substance
b)
compound and mixture
c)
solute and solvent
d)
homeogeneous and heterogeneous
23.
Which of the following is a physical property of an acid
a)
tastes bitter
b)
tastes sour
c)
feels slippery
d)
corrosive
24.
Which of the following is an example of a base?
a)
lemon juice
b)
vinegar
c)
pure rain
d)
ammonia
25.
Which of the following is produced in a neutralization reaction?
a)
acid
b)
base
c)
salt
d)
sugar
26.
Hydrochloric acid (HCl) is a strong acid. When HCl dissolves in water, what is produced?
a)
OH- ions
b)
H+ ions
c)
salt molecules
d)
water molecules
27.
What substance is most likely to have a completely neutral pH?
a)
baking soda
b)
lemon juice
c)
milk
d)
distilled water
28.
If an atom has a mass number of 56 and an atomic number of 26, how many neutrons does it have?
a)
56
b)
26
c)
30
d)
36
29.
Which of the following factors has the greatest effect on solubility?
a)
temperature
b)
density
c)
volume
d)
mass
30.
Based on this equation, which of the following is true?
a)
NiCO3 is a product
b)
NiCO3 is a reactant
c)
CO2 is a reactant
d)
CO2 is a catalyst
31.
The picture shows a chemical reaction taking place. What can you infer about the reaction?
a)
It is an endothermic reaction
b)
It is an exothermic reaction
c)
The reaction does not abide by the law of conservation of mass
d)
The reaction does not abide by the law of conservation of energy
32.
Why do noble gases (group 18) not form compunds?
a)
They are very reactive
b)
They are halogens.
c)
They are not reactive
d)
They do not have a full outer shell
33.
Soldium and Chlorine react to form Sodium Chloride. Which of the following about this chemical reaction is true.
a)
Sodium and Chlorine atoms are rearranged and a new substance is formed.
b)
Sodium and Chlorine atoms are changed into Sodium Chloride atoms.
c)
Sodium and Chlorine atoms have the same properties of Sodium Chloride atoms.
d)
Sodium and Chlorine atoms are destroyed during this reaction.
34.
Where does pH plan an important role in your body?
a)
In your bones
b)
In your muscles
c)
In your stomach
d)
In your lungs
35.
Which of the following is true about a physical change?
a)
there is an unexpected oder
b)
there is an unexpected color change
c)
heat, light, and sound are produced
d)
It can usually be reversed
36.
Which of the following is a correct match of a subatomic particle and its charge.
a)
proton= negative charge
b)
salt= neutral charge
c)
electron=negative charge
d)
neutron= negative charge
37.
If you are looking at a Bohr model of an atom with an atomic number of 12, how many valence electrons should that atom have?
a)
1
b)
2
c)
8
d)
12
38.
If you are drawing the Lewis structure for Helium, how many dots should be drawn in the model?
a)
1
b)
2
c)
8
d)
4
39.
If a candle and clay are measured on a triple balance before the candle is lit and after 10 minutes of burning, explain why the mass would not be equal.
a)
mass was destroyed
b)
energy was destroyed
c)
the missing mass changed form
d)
the law of conservation of mass was not observed
40.
Which of the following helps dissolve solids faster in liquids.
a)
increase in motion
b)
decrease in temperature
c)
decrease in surface area
d)
increase in solute
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