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Change Detectives Flashcards | StudBud
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Change Detectives
Change Detectives
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Questions
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Answers
1
Sublimation is the transition between which
two
states of matter?
Gas
Liquid
Solid
Vacuum
2
What is the middle string of a candle called?
Wax
Flame
Wick
John Wick
3
What is the name of the table that lists all the known elements ?
Table of Elements
Kitchen Table
Periodic Table
Matter Table
4
Atoms or molecules are strongly attracted to one another in a
solid
rock
liquid
gas
5
What pH do alkaline substances have?
Less than 7
3-9
More than 7
Anywhere from 1-14
6
Physical or Chemical Change? Evaporation.
Physical
Chemical
7
Why do candles go out when we blow on them?
Fuel is removed
A sudden change in the air pressure neutralises the point of combustion.
Wax vapourising point is taken away.
Temperature is changed
8
Will acid make a fish sick
True
False
9
Litmus paper turns pink when in contact with an
Neutraliser
Acid
Alkaline
Chicken
10
What is a gas?
something that floats around in its container
Has slow-moving particles.
Is able to be easily compressed
a thing with no viscosity rate
11
Is breaking a pencil in half chemical or physical change?
yes
no
maybe
Physical
12
We use alkaline to neutralize acid.
True
False
13
What is the name given to the reaction aslo know as combustion?
Fire
Freeze
Absorption
Candle
14
What is a liquid?
something that takes the shape of its container.
something just floats around in its container
something that has a high viscosity rate
Has fast-moving particles.
15
What is something that can be in all 3 states of matter?
Solid
Liquid
Water
Gas
16
What is a physical change?
The substance changes
Bike changing color
Marshmallow cut in half
Brushing your teeth
17
What are the three states of matter?
Solid Liquid Gas
Ice Water Steam
Scientific investigations.
Particle structures
18
What is a solid?
Can be changed through heat and pressure.
something that has a really low viscosity
Something which particles move slowly in?
Something that is hard
19
When disolving fizzing tablests the speed at which they disolve is affected by
Temperature of the room
Temperature of the water
Size of the container
Temperature of the tablet
20
Whatis this rapid chemical change called?
exxplosion
explosion
expplasion
explasion
21
The conversion of a solid to a liquid is called
Melting
Vapourisation
Sublimation
Condensation
22
Is this a physical or chemical change?
Chemical
Physical
23
Cracking an egg is a chemical change
True
False
24
I can easily compress the water in a jug to decrease its volume.
True
False
25
Rust is a chemical change
True
False
26
Chemical change can be reversed.
False
True
27
What is physical change?
yes
no
change in shape, size, color, or state
maybe
28
What are the types of reactions in Chemistry?
Reversible/Irreversible
Hot/Cold
Temperature/Heat
Chemical /Physical
29
Chemistry is the science of potions?
True
False
30
What is MATTER
Somethings
Nothing
Everything
Not much
31
You are given two substance which you place in water and it sinks, which statement is then true.
The mystery substance is more dense than water.
The mystery substance is a solid
The mystery substance is denser than water.
The mystery substance must have the same volume as water.
32
Fireworks are a chemical change.
True
False
33
Is this a physical or chemical change?
Chemical
Physical
34
What is the difference between a chemical and physical change?
A new substance is made to evaporate in a chemical change.
Physical changes can only happen with heat
Chemical changes include the creation of a new substance
An example of a Physical change is ice melting
35
Good scientistists use the scientific process for investigation of hypothesis
True
False
36
NEW SUBSTANCES ARE FORMED IN PHYSICAL CHANGE
True
False
37
Melting and Freezing of Ice is an example or reversible change.
True
False
38
What is the difference between heat and temperature?
Temperature is energy, heat is the temperature of something
There is no difference
Heat is energy, temperature is how hot something is.
39
The processes of evaporation, condensation, and precipitation are seen in what?
The Water Cycle
The Energy Pyramid
A Food Chain
A Solar Plant
