Mixtures
How is 0.00069 written in scientific notation?
6.9 x 10-4
A substance that has no definite volume or shape is in what state?
gas
The _____________theory of matter states that all particles of matter are in constant motion.
kinetic
The SI unit of force is the
Newton
What is/are true about ALL waves?
do no transmit matter and do transmit energy
What two type of substances are pure substances?
Most common state of matter
plasma
Describe what happens to the average kinetic energy of water molecules as water freezes.
slows down
When an unbalanced force acts on an object,
the object moves
Sound waves are:
longitudinal
compressional
mechanical
A material that contains three elements chemically joined in fixed proportions
compound
If you move a substance from one container to another and its volume changes, the substance is a
gas
The phase change in which a substance changes from a solid to a gas or vapor without changing to a liquid first is
sublimation
What kind of friction occurs as a box is pushed on a desk?
The frequency of a sound wave determines:
pitch
A mixture that appears to contain only one substance is a(an)
homogenous mixture
The phase change that is the reverse of condensation is
vaporization
The phase change that is the reverse of sublimation is
Projectile motion is caused by
the downward force of gravity and an initial forward velocity.
Light waves are:
transverse
electromagnetic
Sawing a piece of would in half is what type of change?
Physical
During a phase change, the temperature of a substance
Remains constant
Describe particle motion in liquids, gas, and solids
liquid - less packed together
gas- disordered and far apart
The property of matter that resists changes in motion is called
inertia
In which medium does sound travel the fastest?
solids