WorksheetsElements, Compounds and Mixtures (2)
Total questions: 39
Worksheet time: 3hrs 6mins
True or False? Compounds can be broken down into simpler substances.
(a)
True or False, Compounds and elements are found on the periodic table?
True
False
What is the chemical formula for sugar?
(a)
The formula for sugar and that it is a compound?
C6 H12 O5
C6 H12 O6
CO2H5
Why is Carbon considered an element while carbon dioxide is considered a compound.
The are both elements
Both are heterogeneous mixtures
Elements always exist as separate atoms and compounds consist of two or more different atoms
Carbon is a pure substance while carbon dioxide is a mixture
True or False: Electrons and Protons both reside inside the nucleus of an atom?
False
True
It depends on the element
Which one of these listed below is a compound?
Water
Hydrogen
Gold
Helium
The formula for sugar and that it is a compound?
c6hh12O6
C6H12O6
C6O6H12
The formula for iron (III) oxide?
(a)
If a drink container tells you to "SHAKE WELL" before drinking, the mixture in the container is most likely a:
Collid
Suspension
Homogeneous Mixture
Pure Substance
True of False:
Sugar water is an example of a heterogeneous mixture
False
True
True or false: Elements, compounds and mixtures are pure substances.
False
True
True or false: A mixture can be separated into its components by physical means, unlike pure substances.
True
False
True or False: Muddy water is always classified as a suspension
False
True
What type of mixture appears cloudy due to the presence of insoluble particles, but does not form a sediment?
Solution
Colloids
Emulsion
Which of the below is not a colloid
Kool-aid
Hair Gel
Shaving Cream
Lemonade
A snow globe would be an example of a?
(a)
A appears to be clear (are not cloudy)?
A Solution
A Heterogenous Mixture
A Suspension
A Colloid
True or False: Colloids contain undissolved particles.
False
True
Contains two or more atoms combined
Elements
Compounds
Mixtures
What is salad?
element
compound
mixture
Classify the picture with the correct label.
Element
Compound
Mixture of Elements
Mixture of Compounds
Classify the picture with the correct label.
Element
Compound
Mixture of Elements and Compounds
Mixture of Elements
Classify the picture with the correct label.
Element
Compound
Mixture of Elements & Compounds
Mixture of Compounds
Which of the following represents an element?
H2O
H2
NaCl
CaCO3
Which of the following is not a compound?
HCl
Cl
NaCl
CO2
Salt has a chemical formula of NaCl. Salt is a...
Compound
Element
Mixture
None of the Above
What cannot be broken down into other substances?
Compound
Mixture
Solids
Element
What is made up two or more elements that are chemically combined?
(a)
Examples are diamonds (C) and Uranium (U)
elements
mixtures
compounds
The chart below lists some substances and their symbols. How many of these substances are examples of elements?
1
2
3
4
The air is a _________.
element
mixture
compound
energy
In general, metals are _____.
poor conductors of heat
brittle
poor conductors of electricity
good conductors of heat
What makes elements and compounds different from mixtures? Elements & compounds-
have a constant composition (pure substances)
are made of gases
Will not change when heated
conduct electric current
In the diagrams provided, the circles of different colors represent the atoms of different elements. Which diagram represents a mixture?
I
II
III
IV
carbon dioxide, CO2, is an example of a(n)
element
compound
mixture
chlorine gas, Cl2, is an example of a(n)
element
compound
mixture
Kool-aid is a example of a(n)
element
compound
mixture
