Chemical Change
Physical Change
Chemical Change 2
States of matter
Physical and Chemical Change
Random
Other
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 are the 3 states of matter?
Solid, liquid, gas
100
Baking cake is an example of this type of change
chemical change
100
What is the largest mammal in the world?
Blue Whale
100
What elements combine to form water?
Hydrogen and Oxygen
200
How many substances join to form new chemical properties?
Two or more
200
Give 3 pieces of evidence for 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
What is it called when going from a liquid to a solid
freezing
200
Give one example of physical change and one example of chemical change.
...
200
What is the most common M&M color?
Blue
200
What is a reversible change?
A reversible change is a physical change where no new substance is created, and the change can be easily undone to get the original materials back
300
This ALWAYS happens in a chemical change
A new substance forms
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
Two things come together to form something new. This is what type of chemical reaction?
Composition Reaction
300
what is it called going from liquid to gas?
boiling
300
Mixing sugar and water is this type of change
physical change
300
What is the record for the world record for most hotdogs eaten?
Joey Chestnut with a whopping 73 hot dogs
300
Is dissolving salt in water a reversible or irreversible change? Explain why.
It is a reversible change. No new substance is formed, and you can recover the salt by evaporating the water.
400
give 3 indicators of a chemical change
new substance forms, change in mass, change in color
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
What is it called going from solid to liquid?
melting
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
How close (in metres) is the closest McDonalds?
1100
400
Examples of irreversible changes.
Baking a cake
Rusting of an iron nail
Cooking/frying an egg
etc
500
Bonds between atoms are broken and created to form what?
To form new molecules
500
How can you tell that mixing salt and water is a physical change?
you can still separate them
500
A chemical reaction that absorbs energy in the form of heat is called?
ENDOTHERMIC
500
what is it called going from gas to liquid?
condensation
500
Give an example of one thing that creates both a physical and chemical change.
Lighting a candle.
500
Who has the most followers on Instagram?
Instagram! The platform’s channel is the most followed. Second place goes to footballer Cristiano Ronaldo.
500
Is mixing vinegar and baking soda a physical change or a chemical change?
It is an irreversible chemical change. The two substances react to produce new materials, including carbon dioxide gas, water