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WorksheetsChapter 6 practice quiz
Total questions: 65
Worksheet time: 37mins
Sodium + Nitric acid ->___
Sodium Chloride + Hydrogen
Sodium Nitrition + Hydrogen
Sodium Nitrate + Hydrogen
Sodium Chloride + oxygen
The chemical equation of metal react with oxygen is
Metal + oxygen -> Metal sulfric
Metal + Oxygen -> Metal Oxide
Metal + Oxygen -> Metal Oxygen
Metal + oxygen -> rustic
The chemical equation of metal react with water is
Metal + water -> metal hydroxide + hydrogen
Metal + water -> metal oxide + hydrogen
Metal + water -> metal oxide + gas
Metal + water -> metal hydroxide + oxygen
What's the clue for metal react with acid
color change
oxidation
bubble
"pop" sound from light splint
The type of reaction of metal react with acid, oxygen, water
Nuclear reaction
Exothermic
No specific type
Endothermic
The reaction "salt" depend on the type of acid
True or False
True
False, the salt will always be hydroxide
False, the salt can be whatever it want
False, salt isn't made in metal and acid reaction
how to keep your metal fresh
cut a new piece
polish it
store in oil
rinse with water
burn off oxidation
Anything end with OH is a...
acid
base
neutral chemical
hydrogen
What is the clue of metal and oxygen reaction?
"Pop" sound - hydrogen created
Temperature change
Color change
Chemical thicken
What is the clue of metal and water reaction
color change darker
spark (at some reactive metal, not all)
Bubble
big fire
What is reactivity?
How less likely it is that something will have a chemical reaction
How likely it is that something will have a chemical reaction
How likely it is that something will have a chemical eruption
How less likely it is that something will have a chemical eruption
What's inert?
Something that has NO activity, does NOT react
Something that has always HAVE activity, DOES react
Something that HAS activity, DOES react
Something that HAS activity, does not require ANYTHING to react
What's a reactivity series?
Series of metal written in order from the most -> least reactive
Series of metal written in order from the least -> most reactive
Series of metal written in order from the smallest -> biggest reactive
Series of metal written in order from the biggest -> smallest reactive
Chemical reaction between acid and alkali which produces a neutral solution is called...
Neutralisation
Displacement
Precipitation
Subtances that contain only one type of element or compound is called...
Mixture
Pure
Nothing
Element
A mixture of metal with other elements is called
Purity
Pure
Alloy
Risk
What does "risk" mean?
Harm that something may cause
How much of a chemical is in a mixture
Chances of a hazard causing harm
18 karat gold is 75% pure gold. An 18 karat gold ring has a mass of 4g.
How much gold does it contain?
5g
3g
4g
54 karat gold is 75% pure gold. An 54 karat gold ring has a mass of 12g.
How much gold does it contain?
9g
8g
10g
What is this?
Compound
Element
Alloy
What is it?
A mixture includes 1 compound
A pure substance includes 2 compounds
A pure substance includes 1 compound
What is the word equation of neutralisation reaction, which is used to make salt?
Acid + alkali -> salt + carbon dioxide
Acid + alkali -> salt + sulfur dioxide
Acid + alkali -> salt + water
How many ways are there to separate a mixture?
4
3
2
5
What is this process called?
Filtration
Distillation
Evaporation
How many rules do you have to follow while writing word equations?
1
4
3
2
When do you put -ate at the end of the sentence?
When a compound contains metal
When a compound includes hydrogen and oxygen
When a compound has 2 elements and 1 oxygen
When two elements turn into a compound
What do we do when a compound includes hydrogen and oxygen?
Write hydroxide
End the equation with -ate
Write dioxide
Put oxygen in front of the equation
The name of the non - metal element always come first
True
False
Which are the correct way to write an equation?
A & B = A + B
A + B = C
A + B => AB
C + D + E => CDE
Which equation down below doesn't follow the rules?
Magnesium + oxygen = Magnesium oxide
Nickel + Chlorine = Nickel chloride
Potassium + Oxygen + Carbon => Carbon Potassium
Sodium + Oxygen + Nitrogen => Sodium nitrate
Give 1 (only 1) example of an inert
(a)
What are the clues that show a chemical reaction is going to happen?
Bubbles
Starts singing
Change in color
Change in temperature
The truth is, there is 5 clues that a chemical reaction is happening (not only 3 clues, like the book said)
I understand
I'm confused
Things made of 1 type of atom is called...
Element
Inert
Compound
Distillation
Things made of 2 (or more) types of atom is called...
Element
Compound
Inert
Alloy
Potassium + Carbon + Oxygen => ?
(a)
When there is an oxygen and a hydrogen in the equation, you write...
(a)
Is it okay to have two products at the end of a equation?
Yes
No, more than two is not allowed
in exothermic reaction , heat is
release
absorb
exothermic or endothermic?
exothermic
endothermic
in endothermic , heat is
absorb
release
this is exothermic or endothermic
endothermic
exothermic
which is correct
exothermic released , endothermic absorb
endothermic released , exothermic absorb
no one is correct
endothermic released and exothermic released too
exothermic or endothermic
exothermic
endothermic
no answer
(Để cuối) Which parts did you find difficult?
6.1 Using word equations
6.2 Pure substances and mixtures
6.3 Measuring temperature changes
6.4 Exothermic and endothermic
6.5 Reactivity series
exothermic or endothermic
exothermic
endothermic
what type of this
exothermic
endothermic
don't know
oxidation
Which following process exothermic
thermal decomposition
dry ice
burning of a candle
melting ice
iron get rusty , heat relesed . What process is this
exothermic
endothermic
Applications of neutraulization in real life
Fix the "heatburn" in our stomachs
Help your dogs to swim
Control the quality of the medecine
which following process endothermic
rusting of iron
combustion reaction
alkane cracking
exothermic or endothermic
endothermic
exothermic
exothermic or endothermic
exothermic
endothermic
Energy is measured in which of the following units?
kelvin
le quang minh
Joule
Mol
energy is not released in chemical reaction. True or False
True
False
not all chemical reactions release energy
What is the symbol for temperature called?
degree symbol
Celsius
Fahrenheit
What do you measure temperature with?
thermometer
tripod
scale
how can we know which reaction have the most energy released
temperature start+tempature end
tempature end-tempature start
In which direction does the transfer of energy as heat happen spontaneously?
cold to hot
hot to cold
how to know the chemical temperature change
use thermometer
use lipid
Le Quang Minh pour some vinegar to soda to investigate. after 1 min the temperature decreased 4oC. Why?
more energy was needed to break the baking soda and vinegar apart
the experiment cause water evaporate so the temperature decreasing
cause it create carbon dioxide
why measuring temperature is important in chemistry?
to know that the reaction is happen
to know the reaction is NOT happen
to control the rate of reaction
What is the relationship between temperature and heat?
Temperature and heat are the same
temperature and heat are unrelated
Heat is measure of total energy in a system, while temperature is the average kinetic energy of particles in a system
What is the freezing point of water in the Celsius scale?
0 degree
-5 degrees
7 degrees
-10 degrees
How do infrared thermometers work?
By measuring the expansion of a liquid in a sealed tube
By measuring the electrical resistance of a metal wire
By measuring the radiation emitted by an object
