Solids, Liquids, Gases
what is a solid? describe its particle movements and give three examples
A solid has a definite volume and definite shape. They contain closely packed particles that can move slightly (Vibrate)
some examples:
-car
-phone
-tree trunk
-bar of gold
The scientific method looks at ______ and _______
cause and effect
define chemical property
a characteristic that describes a substance‘s ability to change into something else that has different properties. ex: rust
Difference between mass and density?
mass- the amount of matter in an object
density- how much space an object takes up in a specific area d= m/v
List some examples of characteristic properties
answer may vary!
some examples
-density
-color
-magnetism
-shape
What is a liquid? How do they move and give 3 examples.
A liquid has a definite volume but no definite shape. The particles are close together but flow around eachother.
examples:
-milk
-water
-juice
Define scientific law
Is a rule that describes a behavior of something in nature but doesn’t explain why
define physical property
Is a characteristic that can be observed or measured without changing the matter’s identity ex: color
define melting point
The temperature at which a substance changes from solid to liquid; ice melts at 0 C
A hypothesis is written in the form of a “_____ and outcome, _____” statement.
if and then
what is the difference between an amorphous and crystalline solid. Give 3 examples for each.
the difference between them is that an amorphous solid is not arranged in a crystal shape while a crystalline solid’s particles form a repeating pattern.
examples of a amor solid
- rubber
-plastic
-glass
examples of a crystal solid
- salt
-ice
-snow
Define scientific theory
When a hypothesis is backed by many experiments and tests
define thermal conductivity
the rate at which a substance transfers heat
define boiling point
the temperature at which liquid boils; water boils at 100 C
What is the Law of the Conservation of Mass
Matter is neither created nor destroyed in any chemical or physical change
define viscous liquids and give two examples
Viscous- resistant to flowing
example:
honey and syrup
Define control
a comparison that is held constant (not changed)
define both terms malleability and ductile
malleability- can be flattened into thin sheets
ductile- can be pulled into a wire
define flammability
the ability to burn
Which state of matter is the most dangerous, and why?
Plasma because it consists of high energy and the particles are charged.
define effusive liquids and give two examples
Effusive means readily flowing
examples:
water and milk
DAILY DOUBLE! x2
define each with details and give an example while listing the definitions.
independent variable, dependent variable, and control
Independent variable- the cause (what you change in the experiment)
Dependent variable- the effect (Changes as a result of the other
control- a comparison that is held constant (not changed)
define each one.
solute:
soluble:
solvent:
insoluble:
solute: able to dissolve other substances in a solvent ex: salt
soluble: able to dissolve ex: water and salt
solvent: dissolves in a solute ex: water
insoluble: does not dissolve ex: sand and flour
define reactivity
The ability to react
Compare and contrast liquids and solids
answer varies!