A substance is giving off heat, light, and smoke. Most likely the type of change that is occurring is_______
a chemical change
100
What are the 3 states of matter?
solid, liquid, gas
100
Which of the following is a chemical change? Boiling, melting, burning, freezing
Burning--> change results in a new substance?
100
A liquid's resistance to flow
viscosity
100
A change in the chemical properties of a substance results in a ____________
new substance
200
An example of a change of state is _________. (A) exposing photographic film (B) liquid filling a glass (C) ice cubes melting (D) paper burning
(C) Ice Cubes Melting
200
The law of conservation of mass states that matter cannot be __________. (A)changed (B) burned (C)created or destroyed (D) hidden
(C) Created of Destroyed
200
A substance has gone through a chemical change. Most likely, the resulting substance __________.
a. is the same as the old substance
b. is a gas
c. has been created
d. has new physical properties
(d) has new physical properties
200
Examples of chemical properties include __________.
a. melting point and boiling point
b. color and shape
c. length and mass
d. flammability and reactivity
d. flammability and reactivity
200
How do the particles move in a liquid gas and solid?
Gas- Has the most energy; moves freely
Liquid- Has less energy than gas; slide past each other
Solid- Least amount of energy; packed closely together vibrating
300
Has a definite shape and volume
Solid
300
Has a definite volume but not a definite shape
liquid
300
When a gas is cooled it becomes a what?
Liquid
300
Phase change of a solid turning into a gas
Sublimation
300
All matter has density which is calculated by the formula……..
Density= Mass/Volume
400
When iron rusts, it is reacting with __________ in the air.
Hint:The process of rusting is called "oxidation."
Oxygen (O2)
400
Why does a liquid fill the shape of a container?
(A)because the particles of the liquid are constantly moving
(B)because this is a chemical property
(C)because the matter has changed state
(D)because the particles do not move
(A) because the particles of the liquid are constantly moving
400
True or false, air is not matter since it has no mass.
False, Air is matter. It does have mass and it does take up space.
400
Matter has mass because all matter is made from ________ which have mass.
atoms
400
Change from a liquid to a solid
What is freezing
500
A solid with particles arranged in a repeating pattern?
Crystalline Solid
500
As a solid turns to a liquid, what happens to the thermal energy. Is it increasing or decreasing?
increasing
500
What are all molecules always in a constant state of?
Motion
500
What happens when an object's kinetic energy increases?
The particles move faster
500
Matter has volume. One way to measure
the volume of an object with an irregular
shape is called__________