Chemical Change
Physical Change
Chemical Change 2
Physical Change 2
Physical and Chemical Change
Chemistry
100
Give 4 examples of chemical change.
Iron rust, gas burning, slime making, necklaces tarnishing, etc.
100
Whipping eggs, boiling water, dissolving sugar, dicing vegetables are 4 examples of what?
Physical Change
100
What produces when a chemical change reaction is released?
Gas
100
What is physical change?
A physical change is a change in a substance that does not change what the substance is.
100
SLIME is an example of what change?
Chemical Change
100
Draw the electron configuration of Lithium
200
How many substances join to form new chemical properties?
Two or more
200
Give 3 evidences of physical change.
Change in form, change in shape, change in size, change in phase.
200
Occurs when what molecules are interacted and the molecules change into a new substance.
Chemical Reaction
200
Is shredding paper a physical change?
Yes!
200
Give one example of physical change and one example of chemical change.
...
200
Where are electrons found and what charge do they have?
Location: outer shell
Charge: negative
300
When a chemical reaction between substances gets heat, it is all because of what element?
Oxygen
300
Give the physical change of a candle.
When the candle burnt down, it will goes back into the same form, it's still a candle.
300
substance that increases the rate of a chemical reaction without being consumed in the process
catalyst
300
Mixing sand and water is
A physical change
300
What are the chemical reactions in making a slime?
The glue solution changes from being very liquidly to a rubbery kind of stuff.
300
Where are neutrons found and what charge do they have?
Location: nucleus
charge: neutral (0)
400
Give 3 examples of a chemical change.
Rusting, tarnishing, decomposing, polymerization
400
What are the main states of mater?
Solid, liquid, gas
400
During a chemical change energy can be released in the form of?
Heat and Light
400
Give an example of a change in size physical change.
Ex. Cutting a paper
400
What is the difference between a physical change and chemical change?
A chemical change there is a change in the substance and in physical change there is a difference in the appearance.
400
Draw the electron configuration of Sodium
500
Bonds between atoms are broken and created to form what?
To form new molecules
500
Give four PHASES of change in a physical change.
Melting, boiling, evaporation, condensation, freezing, sublimation, deposition.
500
A chemical reaction that absorbs energy in the form of heat is called?
ENDOTHERMIC
500
Give a solid to liquid type of physical change.
Ice melting
500
Give an example of both a physical and chemical change.
Lighting a candle.
500
What happens to the atoms when they are being heated?
When atoms are heated, they gain kinetic energy, causing them to vibrate and move faster.