Worksheets3.3 Structure & Properties of Materials
Total questions: 20
Worksheet time: 13mins
Which of the following is a pure substance that cannot be separated into simpler substances by chemical or physical means?
Element
Compound
Mixture
Chemical
What is H2SO4 made up of?
2 hydrogen, 1 sulfur, 4 oxygen
1 hydrogen, 2 sulfur, 4 oxygen
2 hydrogen & 4 sodium
1 hydrogen & 6 sodium
Which of the following is not a compound?
HCl
Cl2
NaCl
CO2
When electricity passes through water, hydrogen and oxygen are produced. Which table correctly labels the compounds and elements involved in the process?
Water-->Compound
Hydrogen-->Compound
Oxygen--->Element
Water-->Compound
Hydrogen--->Element
Oxygen--->Compound
Water--->Compound
Hydrogen--->Element
Oxygen--->Element
This picture is a model of a...
element
compound
mixture of compounds
mixture of elements
Which of the following is described by the diagram as shown?
CO2
CO
H2
Mixture of elements
Steel generally speaking is made of
iron and carbon
copper and iron
tin and carbon
aluminum and nickel
Brass is an alloy made of
copper and zinc
copper and tin
copper and nickel
copper and aluminum
Alloy is a ...
a chemical compound with combination between metal and non-metal
a salt contain of two or more elements where the main element is non-metal
mixture of a metal and other elements
compound of a metal and other elements
Why are alloys generally used to make everyday objects?
Alloys are often stronger & harder than pure metals.
Alloys have higher melting point than pure metals.
Alloys are less expensive to produce than pure metals.
Alloys have ionic bonds instead of metallic bonds.
Which of the following is NOT a common property of metals?
ductile
good electrical conductor
low boiling point
malleable
high melting point
Which of the following best explains why an alloy is used over pure metals?
The different sized molecules disrupt the order arrangement, thus, the layers of molecules cannot slide easily.
The different sized atoms disrupt the order arrangement, thus, the layers of atoms cannot slide easily.
Alloy is a mixture of metal and other elements while pure metals contain one type of atom only.
Strong electrostatic forces hold the positive ions and the negative electrons together, thus, it is hard to break metals apart.
Which diagram shows arrangement in steel?
A
B
C
D
