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Chemistry Fundamentals-KS3 Flashcards | StudBud
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Chemistry Fundamentals-KS3
Chemistry Fundamentals-KS3
30 terms
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Test your knowledge on basic concepts of chemistry with these true or false questions and more
Flashcards
30 cards
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Questions
30
Answers
1
Chromatography is used for separating different liquids.
False
True
2
What is the purpose of the baseline in method 2 of chromatography?
To separate the spots
To make the spots hard to see
To make the separation of the spots easy to see
To carry up the paper with the ink spots
3
What is the first step in separating rock salt?
Grinding
Evaporating
Dissolving
Filtering
4
What is the formula for water?
H2
O2
HO
H2O
5
True or false: Identical elements form compounds.
True
False
6
What is a pure substance made up of?
H, molecules only
H and O atoms
Different substances
Chemical reaction
7
What is the location of non-metals on the periodic table?
Right corner
Bottom
Left corner
Middle
8
What are mixtures in chemistry like in the kitchen?
Mushed up components
Physical methods
Chemically joined substances
Separate elements
9
What is the difference between mixtures and compounds?
Different properties
Chemical reaction needed
Physical methods used
Separation techniques
10
What are sea water and air examples of?
Physical methods
Separation techniques
Different gases
Chemically combined substances
11
What is the main property of non-metals in terms of electricity?
Good conductors
Insulators
Superconductors
Semiconductors
12
What is the property of metals that allows them to be pulled hard without breaking?
Malleability
High melting and boiling points
High tensile strength
Ductility
13
True or false: Noble gases are very reactive.
True
False
14
What is the property of metals that allows them to be drawn into wires?
High melting and boiling points
High tensile strength
Ductility
Malleability
15
What is the main property of non-metals in terms of strength and durability?
Strong and durable
Stiff and rigid
Weak and breakable
Flexible and elastic
16
True or false: Atoms can be seen directly.
True
False
17
What is the main property of non-metals in terms of light reflection?
High reflection
Selective reflection
Low reflection
No reflection
18
What is the purpose of free electrons in metals?
To transfer energy from hot to cold parts
To conduct electricity
To hold metal atoms together
To make metals shiny
19
What are the four separation techniques?
Rock Salt, Salt and Sand, Crystals, Evaporating Dish
Grinding, Dissolving, Filtering, Evaporating
Filtration, Evaporation, Chromatography, Distillation
Mixture, Compound, Solution, Dissolve
20
Mixtures can be separated using chemical methods.
True
False
21
What is the main property of non-metals in terms of melting and boiling points?
Selective points
No points
Low points
High points
22
What is the property of metals that allows them to be hammered into thin sheets or bent without shattering?
High densities
High tensile strength
Ductility
Malleability
23
What is the ending for compounds with oxygen?
-ine
-ium
-ate
-ide
24
What is chromatography used for?
Separating different liquids
Identifying blood samples
Classifying materials
Investigating chlorophyll
25
Non-metals are good conductors of electricity.
False
True
26
True or false: Compounds can be split easily.
True
False
27
What do you call a mixture of different elements?
Mixture
Solution
Element
Compound
28
What is the main property of non-metals in terms of brittleness?
Bendable
Shatter easily
Durable
Flexible
29
What is the flow of electrical charge around a circuit called?
Electricity flow
Electric current
Electrical current flow
Electrical charge flow
30
What is the main property of non-metals in terms of energy transfer by heating?
Fast transfer
No transfer
Selective transfer
Slow transfer
