True or False; all matter is made of atoms and molecules that act like tiny particles
True
100
The phase change that goes from solid to liquid is
Melting
100
Something that describes matter
property
100
The starting materials in a chemical reaction is
the reactant
200
What are things that are NOT matter? (answers may vary)
light, sound, and electricity
200
What are the 3 states of matter?
Gas, liquid, solid
200
Gas to liquid is the phase change called
condensation
200
A materials ability to allow heat to flow
Conductivity
200
When a substance changes into one or more new substance
Chemical change
300
True or False: The smallest particle of an element is a molecule
False; atom
300
This state of matter has a definite volume but no definite shape.
Liquid
300
When water is being boiled, energy has to be __________
added
300
What are 3 examples of Chemical Properties?
Flammability, heat of combustion, toxicity, Ph, ability to oxidize, radioactivity, reactivity with water, rusting (answers may vary)
300
True or False; in a physical change, some of the substances in a material change, but the properties stay the same
true
400
List the 4 types of mixtures
heterogenous, immiscible, homogeneous, misicible
400
What determines the shape and volume of a gas?
Size of the container
400
What is the difference between freezing and deposition?
Freezing is liquid to solid and deposition is gas to solid
400
How can you determine if an object will float in water?
Find (or know) the density
400
Name 3 signs that a physical change has occured
shaped has changed, color was changed by someone, texture changed, dissolved, phase changes
500
What is the difference between distillation and filtration?
Distillation is the process of separating materials based on their boiling points, and filtration separates materials based on the size of their particles.
500
What is a phase change?
going from solid to liquid to gas and back down
500
In the process of sublimation it goes from _____ to _____ and energy must be ______
Solid to gas, Added (must get both correct to get points)
500
Explain the difference between chemical properties and physical properties
Chemical properties describes the way a substance reacts when it changes, and physical properties are characteristics of a substance that can be observed without changing
500
An odor change is a sign that a __________ has happened