Vocabulary
Do molecules change form during a physical change?
No
Is rust an example of a chemical change?
What is YES? A different molecule is created
True or False. An element is the smallest unit of matter
What is FALSE?
Burning
Chemical
These are the characteristics of an object that can be seen and observed.
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.
Name the two indicators of a chemical change.
What are color change, bubbles, temperature change?
What makes elements unique?
They are made from the same atom.
Volume and Mass
Physical
A new molecular structure of a substances is made with this change.
What is a CHEMICAL CHANGE?
True or False. Water boiling is a physical change.
True
True or False: Rotting food is an example of a chemical change.
True
The atomic number of an element comes from the number of these:
What is a proton?
Change of phase
Physical
This is measured by dividing mass and volume.
What is a density
True or False: Malleability is NOT a physical property of matter
False
True or False. Turning peanuts to peanut butter is an chemical change.
What is FALSE? To make peanut butter, you grind up roasted peanuts, so nothing new is being created.
These molecules move rapidly and freely wherever there is open space and have no volume or shape.
What is a GAS?
A gas is produced
Chemical
Density, melting point, boiling point: These may all be classified as
What is a physical properties of matter?
This is the temperature at which a substance changes from a solid to a liquid.
What is melting point?
What is the name of the tendency of a substance to undergo a chemical change?
Reactivity
In order for a molecule to be created, this type of reaction must happen.
What is chemical?
Evaporation
Physcial