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WorksheetsGases Review
Total questions: 30
Worksheet time: 31mins
How does the Earth keep itself warm?
Sunlight keeps the Earth warm.
There are heat lamps orbitting above the Earth's atmosphere.
The greenhouse gases trap the warm air and send it back to the Earth's surface.
How are covalent bonds formed?
electrons are shared
electrons are transferred
This is a correct dot diagram for neon (Ne)
true
false
This could be the dot diagram of
Mg
Cl
C
O
What is the goal of the Lewis Dot Structure?
To determine the electron position.
To show the element's valence electrons & bonding capabilities.
To find the atomic mass of an element.
To search for the number of electrons in an individual atom.
How many valence electrons should Oxygen have in its Lewis dot model?
5
6
7
8
How many valence electrons should Lithium have in its Lewis dot model?
1
2
3
4
How many valence electrons should Magnesium have in its Lewis dot model?
1
2
3
4
To test for hydrogen you....
use a lit splint
use a glowing splint
add anhydrous copper sulphate
bubble the gas through limewater
To test for oxygen gas we use...
a lit splint
a glowing splint
limewater
red litmus paper
When a glowing splint is put into oxygen we will observe....
the splint relight
the splint go out
a squeaky pop
no change
The positive result for a lit splint test......
gives a squeaky pop
shows the presence of hydrogen
has the splint relights
has the splint goes out
When carbon dioxide is bubbled through limewater a positive result could be described as.....
colourless to milky
colourless to cloudy
a white precipitate forms
the solution goes clear
A student measures the pressure and volume of an empty water bottle to be 1.4 atm and 2.3 L. She then decreases the pressure to 0.65 atm. What is the new volume?
2.1 L
5.0 L
8.2 L
3.9 L
What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38°C to 123°C?
0.9 atm
2.1 atm
1.6 atm
3.4 atm
Determine the temperature required for 0.0470 mol of gas to fill a balloon to 1.20 L under .998 atm pressure.
0 K
107 K
207 K
307 K
Pressure is
defined as the mass that an object exerts when at rest.
not a measurable in gases.
defined as the number of moles of substance divided by the mass of the substance.
created by the force of the gas particles impacting the walls of the container.
