760246
Description
Quiz by Hollieee01, updated more than 1 year ago
|
Created by Hollieee01
about 10 years ago
|
|
Question 1
Question
What atoms do covalent bonds occur between?
Answer
-
Non-metal atoms
-
Metal atoms
-
Metal and non-metal atoms
Question 2
Question
A single covalent bond is formed when two atoms share one pair of electrons
Answer
- True
- False
Question 3
Question
How many electrons are shared when a double bond is formed?
Answer
-
2 electrons
-
Two pairs
-
1 pair
-
12 electrons
Question 4
Question
What is each atom aiming to do when sharing it's electrons?
Answer
-
Get a full outer shell
-
Lose all of its neutrons
-
Give away all of it's electrons to other elements
-
Share with all it's friends to make the world a happier place
Question 5
Question
What are the properties of a simple covalent molecule? (2)
Answer
-
Weak forces between the molecules
-
Strong covalent bonds between atoms
-
Weak covalent bonds between atoms
-
Strong forces between the molecules
Question 6
Question
Simple covalent molecules have high melting and boiling points and can conduct electricity
Answer
- True
- False
Question 7
Question
What makes the giant molecule different to a simple molecule?
Answer
-
Many of the atoms in a giant molecule are joined together covalently throughout the whole giant molecule structure
-
There are more electrons in the atoms of the giant molecules which makes them negatively charged and able to conduct electricity
-
Giant molecules have high boiling and melting points, simple molecules have low ones
-
A simple molecule is made by breaking the atoms apart, a giant molecule is made by connecting atoms together manually
Question 8
Question
Graphite is used to make
Answer
-
Cars and airplanes
-
Electrodes and lubricants
-
Roofs of houses and flooring
-
Soles of shoes and hair clips
Question 9
Question
Does graphite have weak forces of attraction between its layers or strong?
Answer
-
Strong?
-
Weak?
Question 10
Question
What methods can you use to test different compounds?
Answer
-
Melting them using a bunsen burner
-
Placing electrodes into a sample of the substance to see if it conducts electricity as a solid, liquid or aqueous solution
-
Timing how long it takes the substance to dissolve in water
Question 11
Question
What is the definition of immiscible?
Answer
-
When two liquids are mixed together and form distinct separate layers
-
When liquids are mixed together and stay mixed together
-
When liquids turn to carbon dioxide when placed together
-
When liquids turn to a gas when they have been placed in a freezer
Question 12
Question
Miscible is when liquids are mixed together and they stay mixed together
Answer
- True
- False
Question 13
Question
How would you separate miscible liquids?
Answer
-
By using distillation or fractional distillation
-
By shaking them around
-
By using a separating tunnel
-
By placing them in a water bath
Question 14
Question
Once oxygen has been separated from liquid air by fractional distillation what can we use it for?
Answer
-
Steel-making
-
To help young children breath better
-
To help freeze food quickly
-
To put back into the air
Question 15
Question
What is chromatography used for?
Answer
-
To separate dissolved dyes used in food colourings
-
To check foods for additives, contaminants and other substances
-
To separate traces of chemicals in fires
-
To identify drugs
-
To test our blood pressure
-
To test for animal faeces
Question 16
Question
How do we work out the Rf value of a substance?
Answer
-
Distance moved by soluble substance / Distance moved by solvent
-
Distance moved by solvent / Distance moved by soluble substance
-
Distance moved by soluble substance x Distance moved by solvent
-
Distance moved by soluble substance + Distance moved by solvent
Want to create your own Quizzes for free with GoConqr? Learn more.