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WorksheetsPhysical Science R
Total questions: 43
Worksheet time: 22mins
Name
Class
Date
1.
What are the smallest parts of pure substances that cannot be broken down into simpler substances?
a)
molecules
b)
atoms
c)
mixtures
d)
elements
2.
Which part of an element is the smallest part that has that element's chemical properties?
a)
atom
b)
chemical
chemical
chemical
c)
particle
d)
mass
3.
A ________ has a positive charge in an atom.
a)
neutron
b)
proton
c)
electron
4.
Which two subatomic particles make up the mass of the atom?
a)
electrons and neutrons
b)
protons and electrons
c)
protons and neutrons
5.
Which of the following have a negative charge?
a)
neutron
b)
proton
c)
electron
6.
The atomic number of the number of _____ in an atom.
a)
neutrons
b)
protons
c)
electrons
7.
Saltwater is classified as what type of mixture?
a)
atoms
b)
an element
c)
compound
d)
mixture
8.
Iron, mercury, lead, sulfur, chlorine, sodium, and uranium are all examples of what type of matter?
a)
atom
b)
elements
c)
compounds
d)
mixtures
9.
What is the name for pure substances, composed of two or more elements, which can be made into simpler substances through chemical changes?
a)
atoms
b)
elements
c)
compounds
d)
mixtures
10.
Which of the following is a compound?
a)
sodium
b)
oxygen
c)
carbon dioxide
d)
hydrogen
11.
A(n) __________ bond occurs when metals react with nonmetals.
a)
ionic
b)
covalent
12.
In a(n) __________ bond electrons are shared.
a)
ionic
b)
covalent
13.
Rust and table salt are examples of _____ bonds.
a)
ionic
b)
covalent
14.
A mixture is uniform within the substance, evenly mixed, and cannot be distinguished visibly. This mixture is called _________.
a)
heterogeneous
b)
compound
c)
substance
d)
homogenous
15.
A certain element is dense, shiny, and a good conductor of both heat and electricity. Based on these characteristics, what type of element is this?
a)
metal
b)
nonmetal
c)
metalloid
d)
plastic
16.
What type of element usually has a dull appearance and is generally not a good conductor of heat or electricity?
a)
metal
b)
nonmetal
c)
metalloid
d)
solid
17.
The class is asked to identify an element which is malleable, has luster, and a high density. What type of element is this?
a)
nonmetal
b)
graphite
c)
hydroxide
d)
metal
18.
He, Ne, and Ar are in the same column of the periodic table and share many of the same characteristics. What is the name for such a set of elements?
a)
metal
b)
family
c)
category
d)
collection
19.
The periodic table has a zigzag line. Which major classification of elements is located on the right side of the zigzag line?
a)
nonmetals
b)
families
c)
periods
d)
metals
20.
Which element is represented below?
1
H
1.008
1
H
1.008
a)
water
b)
helium
c)
halon
d)
hydrogen
21.
The chemical formula H2O identifies what common substance?
a)
table salt
b)
sugar
c)
dioxygen hydrogen
d)
water
22.
The chemical formula for table salt is NaCl. Which two elements make up this compound?
a)
sodium and calcium
b)
nitrogen and chlorine
c)
nitrogen and calcium
d)
sodium and chlorine
23.
In the chemical symbol for nitrogen gas, N2, what does the 2 represent?
a)
two nitrogen compounds
b)
two nitrogen atoms
c)
two types of nitrogen gas
d)
two nitrogen symbols
24.
Simple sugar is made of carbon, hydrogen, and oxygen. Choose the formula below that represents simple sugar.
a)
C6H12O6
b)
CHO12
c)
C2H2
d)
C2H2O2
25.
A solution has a pH of 3. What type of solution is this?
a)
basic
b)
acidic
c)
neutral
d)
water
26.
What type of indicator, used in the science lab, will turn magenta when it is combined with a strong base?
a)
phenophthalein
b)
pH paper
c)
blue litmus paper
d)
red litmus paper
27.
A piece of red litmus paper turns dark blue in a solution. What type of solution is being used?
a)
acidic
b)
basic
c)
neutral
d)
phenolphthalein
28.
Which of the following is an example of a base?
a)
pure water
b)
soap suds
c)
lemon juice
d)
tap water
29.
In the science lab students are testing solutions as acids or bases. The pH level of a solution Y was determined to be 7. What is solution Y?
a)
base
b)
acid
c)
neutral
d)
both and acid and base
30.
A solution that reacts with acids to form a neutral pH is a/an ______________.
a)
base
b)
acid
c)
neutral
d)
detergent
31.
Which statement related to this chemical reaction is true?
Ca + O2 => 2CaO
Ca + O2 => 2CaO
a)
2CaO is a reactant
b)
O2 is a product
c)
Ca is a product
d)
CaO is a product
32.
In this synthesis reaction, hydrogen gas combines with oxygen. Which is the product?
2H2 + O2 => 2H2O
2H2 + O2 => 2H2O
a)
hydrogen gas
b)
oxygen gas
c)
hydrogen and oxygen
d)
water
33.
Carbon dioxide, water, and energy are located on the left side of the equation. What are these substances called?
a)
reactants
b)
products
c)
components
d)
credits
34.
In chemical reactions, the Law of Conservation of Mass is supported because of which of the following?
a)
mass is always lost
b)
mass is always gained
c)
mass stays the same
d)
mass always changes
35.
What do we call a chemical equation that has the same numbers of each type of atom on both sides of the arrow?
a)
simple
b)
balanced
c)
complex
d)
chemical
36.
What is the name of the temperature at which a solid changes into a liquid?
a)
melting point
b)
boiling point
c)
chemical reactivity
d)
density
37.
Which of the following in NOT a fact about matter?
a)
smell is not a physical property of matter
b)
matter is anything that takes up space
c)
matter can be observed
d)
density is a property of matter
38.
Density can be used as a physical property for identification of a substance because the density of a substance ____________.
a)
stays the same no matter the size of the sample
b)
changes with the different amounts of the substance
c)
is determined by the height of a substance
d)
is a chemical property
39.
Which is a physical change?
a)
burning coal
b)
tearing paper
c)
digesting food
d)
iron rusting
40.
Which is not a physical change?
a)
iron rusting
b)
boiling water
c)
dissolving salt in water
d)
polishing shoes
41.
When two substances were combined together, heat was given off and the color changed. What has happened?
a)
conversion
b)
fire
c)
nuclear event
d)
chemical reaction
42.
When two substances were combined together, heat was given off and the color changed. What has happened?
a)
conversion
b)
fire
c)
nuclear event
d)
chemical reaction
43.
Mr Henry dropped two antacid tablets into a glass of water. He noticed bubbles rising up from the tablets. What type of change was Mr. Henry observing?
a)
physical change
b)
formation of a precipitate
c)
formation of nuclear energy
d)
chemical change
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