Vocabulary
Anything that has mass (weight) and takes up space.
What is MATTER?
Is a melted popsicle an example of a physical change?
What is YES? You can melt and refreeze a popsicle and it will still be a popsicle.
Bubbles are a sign of this being produced.
What is gas?
Frying an egg
What is chemical change?
What are the two types of properties exhibited by substance?
What are chemical and physical?
These are the characteristics of an object and you use your senses to identify them.
What are PHYSICAL PROPERTIES?
Is Alka-Seltzer and water an example of a physical change?
What is NO? When you mix Alka-Seltzer and water, bubbles form, which indicates a chemical change as taken place.
True or false: chemical change can be reversed.
False.
An ice cube melting.
What is physical change?
These are seen when a substance reacts with something else and changes into a new substance.
What are chemical properties?
Type of change where a new substance is created.
What is a CHEMICAL CHANGE?
True or false: Chopping wood is an example of a physical change.
What is TRUE?
When two liquids form a solid it is called ______.
Precipitate.
Mowing the lawn.
What is a physical change?
These include things like color, smell, density, and hardness.
What are physical properties?
A type of change where the substance stays the same, but size and shape may change.
What is a PHYSICAL CHANGE?
The ability to be hammered or rolled into thin sheets.
What is malleability?
Ice melting is a chemical change.
What is FALSE?
An apple turning brown.
What is a chemical change?
C6H12O6 + 6O2 → 6CO2 + 6H2O + Energy (ATP)
Chemical or physical?
What is chemical?
This type of matter keeps a definite shape.
What is a SOLID?
The ability to be drawn into wires.
What is ductility?
Name 4 signs of chemical change.
precipitate, color change, sound, light, temperature, gas, and odor
A glowstick lighting up.
What is chemical change?
H2O (liquid) → H2O (gas)
Chemical or Physical?
What is physical?