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WorksheetsUnit 1: Matter & Its Interactions (Chemistry)
Total questions: 30
Worksheet time: 16mins
Name
Class
Date
1.
the basic building block for all matter
a)
atom
b)
compound
c)
molecule
d)
salt
2.
A chemical substance formed when two or more different elements bond in a specific proportion
a)
molecule
b)
atom
c)
compound
d)
element
3.
a substance consisting of a single type of atom
a)
molecule
b)
compound
c)
salt
d)
element
4.
multiple elements and/or compounds physically not chemically joined
a)
molecule
b)
mixture
c)
compound
d)
element
5.
-Formed when two or more atoms bond together chemically
-The atoms can be the same or different
-The atoms can be the same or different
a)
Molecule
b)
Atom
c)
Chemical Equation
d)
Chemical Reaction
6.
examples of compounds:
a)
H
b)
O3
c)
NH3
d)
O2
7.
How many atoms are in CaCO3?
a)
3
b)
4
c)
5
d)
6
8.
How many elements are in CaCO3?
a)
3
b)
4
c)
5
d)
6
9.
How many elements are in H2SO4?
a)
1
b)
3
c)
5
d)
7
10.
How many atoms are in H2SO4?
a)
1
b)
3
c)
5
d)
7
11.
What are the reactants of photosynthesis?
a)
chlorophyll in leaves
b)
carbon dioxide and water
c)
glucose and oxygen
d)
C6H12O6 and O2
12.
What are the products of photosynthesis?
a)
chlorophyll in leaves
b)
carbon dioxide and water
c)
CO2 and H2O
d)
C6H12O6 and O2
13.
A shorthand that scientists use to describe a chemical reaction
a)
chemical formula
b)
chemical equation
c)
Physical property
d)
physical change
14.
The recipe for a chemical substance
-Tells the number of atoms of each element in a compound or molecule
-Uses symbols for the elements present and subscripts (small numbers) to indicate the number of elements
Ex. H2O - water
-Tells the number of atoms of each element in a compound or molecule
-Uses symbols for the elements present and subscripts (small numbers) to indicate the number of elements
Ex. H2O - water
a)
chemical change
b)
chemical equation
c)
chemical formula
d)
physical formula
15.
What are the reactants of cellular respiration?
a)
High Energy
b)
Only ATP
c)
H2O and CO2
d)
C6H12O6 and O2
16.
What are the products of cellular respiration?
a)
High Energy
b)
Only ATP
c)
H2O and CO2
d)
C6H12O6 and O2
17.
A characteristic of a substance that can be observed without changing the substance into something else
a)
Physical Property
b)
Physical Change
c)
Chemical Property
d)
Chemical Change
18.
A change that affects the form or appearance (i.e. size, shape or color) but does not form a new substance
a)
Physical Property
b)
Physical Change
c)
Chemical Property
d)
Chemical Change
19.
Flammability, pH (how acidic something is), and Reactivity are examples of:
a)
Physical Properties
b)
Physical Changes
c)
Chemical Properties
d)
Chemical Changes
20.
length, color, shape, density, mass, volume, and solubility are examples of:
a)
Physical Properties
b)
Physical Changes
c)
Chemical Properties
d)
Chemical Changes
21.
describes how substances could possibly form new substances
a)
Physical Properties
b)
Physical Changes
c)
Chemical Properties
d)
Chemical Changes
22.
-A change of one substance into another substance
-When two or more substances join to form new substances with new chemical properties
-When two or more substances join to form new substances with new chemical properties
a)
Physical Property
b)
Physical Change
c)
Chemical Property
d)
Chemical Change
23.
Iron rusting, Gas burning, Eggs cooking, Bread rising, and Wood burning are examples of:
a)
Physical Properties
b)
Physical Changes
c)
Chemical Properties
d)
Chemical Changes
24.
-Production of an Odor
-Unexpected change in Temperature
-Unexpected Change in color
-Unexpected Formation of gas bubbles
-Formation of a Solid
all of the above are signs/evidence of:
-Unexpected change in Temperature
-Unexpected Change in color
-Unexpected Formation of gas bubbles
-Formation of a Solid
all of the above are signs/evidence of:
a)
Physical Properties
b)
Physical Changes
c)
Chemical Properties
d)
Chemical Changes
25.
What holds atoms together to make a molecule?
a)
Glue
b)
Bonds
c)
Magnetism
d)
Cement
26.
Name this compound: H2O
a)
Water
b)
Carbon dioxide
c)
Hydrogen peroxide
d)
Sulfuric acid
27.
How many Hydrogen (H) atoms are in NH3O5
a)
3
b)
4
c)
5
d)
1
28.
Carbon (C) and hydrogen (H) are pure substances. Each is made of only one type of atom, but carbon atoms are different from hydrogen atoms. Carbon and hydrogen chemically combine to form methane (CH4).
a)
methane is an element and carbon and hydrogen are compounds.
b)
carbon, hydrogen, and methane are all elements.
c)
carbon, hydrogen, and methane are all compounds.
d)
carbon and hydrogen are elements and methane is a compound.
29.
The air we breathe contains different individual gases (mostly nitrogen and oxygen). Which of the following correctly describes the air we breathe?
a)
compound
b)
liquid
c)
element
d)
mixture
30.
This picture represents which of the following?
a)
an element
b)
a compound
c)
a mixture
d)
an atom
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