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Worksheets1st 4.5 Benchmark Review 1
Total questions: 30
Worksheet time: 51mins
A substance made up of two or more chemically combined elements is ___.
a compound
an element
a mixture
a solution
Two or more physically combined substances form ___.
a mixture
an element
a compound
an acid
What is an example of a compound?
Table salt (NaCl)
Air
Oxygen (O2)
Salt water
Which of the following is a mixture?
soda
rust (Fe2O3)
methane (CH4)
oxygen (O2)
What is an example of a mixture?
Air
Oxygen (O2)
Pure water (H2O)
Table salt (NaCl)
The picture shows ____.
a compound
an element
a mixture
an organic
Identify all the organic compounds.
C6H6O
NaCl
NO2
CH4
C3H8
Which of the following is a heterogeneous mixture?
Chicken Soup
Salt Water
Lemonade
Steam
A substance that cannot be broken down into any other substance by ordinary chemical means is called ___.
an element
a molecule
a compound
a mixture
A mixture is uniform within the substance, evenly mixed, and cannot be distinguished visibly. This mixture is called ___.
homogeneous
substance
compound
heterogeneous
Which of the following is an element?
O2
CO2
H2O
CH
Spaghetti is a ____ mixture.
Heterogeneous
Homogeneous
A substance has a pH of 4. This should be classified as ___.
an acid
a base
a reactive matter
an inorganic compound
Which of the following statements is true concerning acids and bases?
An acid mixed with a base neutralizes the solution
Acids and bases do not react
An acid mixed with a base makes the acid stronger
An acid mixed with a base makes the base stronger
Any substance with a pH of 7 is considered ___.
neutral
acidic
basic
malleable
Which chemical property describes a substance that reacts rapidly with oxygen and gives off heat?
combustibility
reactivity
acidity
basicity
Which is a chemical property of matter?
Reactivity
Color
Density
Solubility
What is the name of the tendency of a substance to undergo a chemical reaction?
reactivity
combustibility
malleability
solubility
What is the difference between a physical and a chemical property of matter?
A physical property does not change the identity of a substance, and a chemical property does change something into a new substance.
A chemical property does not change the identity of a substance, and a physical property does change something into a new substance.
A chemical property means an object cannot be changed, but a physical property can change an object.
A physical property means an object cannot be changed, but a chemical property can change an object.
What is the boiling point of water in the metric system?
100 Celsius
100 Fahrenheit
212 Celsius
212 Fahrenheit
Milk has a weak acid. Which of the following could be the pH of milk?
6
8
7
10
Which of the following could be the pH of a weak base?
6
8
1
14
Which one of these is a chemical property?
Malleability
Rust
Conductivity
Density
