A type of matter with fixed composition. It can be either an element or compound
100
Color, shape, size, density, melting point, and boiling point.What are examples of physical properties? (six examples)
Color, shape, size, density, melting point, and boiling point.
100
What is kinetic theory?
An explanation of how particles in matter move.
100
D=mass/volume
=grams/cm3
What is the formula for density?
100
Buoyant force
What did Archimedes discover?
200
Give an example of one element and one compound.
Element- Copper
Compound- Water, chalk
200
A jacket catches on fire. What is this an example of?
a chemical change
200
What is plasma? Give an example.
What is plasma? Give an example. Matter consisting of positively and negatively charged particles. Ex. Sun
200
It has a high viscosity.
When you take syrup out of the refrigerator and pour it, the flow of the syrup is slow, why is this?
200
Fluid
According to Pascal's principle, pressure applied to a fluid is transmitted throughout the _____.
300
What is a heterogeneous mixture?
A mixture in which different materials can be distinguished easily
300
substance
You can observe physical properties without changing the identity of a _______.
300
Diffusion
What occurs in solids and liquids but occurs most rapidly in gases?
300
If the buoyant force of the fluid is less than the weight of the object, the object sinks.
What is buoyancy force?
300
decrease
According to Boyle's law, if you ____ the volume of a container of gas and hold the temperature constant, the pressure of the gas will increase.
400
How can you distinguish a colloid?
One way to distinguish a colloid from a solution is by its appearance
400
What is distillation?
The process for separating substances in a mixture by evaporating liquid and recondensing its vapor
400
increases
Increasing the temperature INCREASES or DECREASES the rate of energy transfer between particles?
400
No it doesn't change.
As the volume and temperature increase in Charles's law, does the pressure increase?
500
if pond water stands long enough, some mud particles will fall to the bottom, and the water clears. What is this an example of?
suspension
500
The mass of all substances that are present before a chemical change equals the mass of all the substances that remain after the change, is what?
the law of conservation of mass
500
1. All matter is composed of small particles.
2. These particles are in constant, random motion.
3. These particles are colliding with each other and the walls of their container.
What are the three assumptions of kinetic theory?
500
Float
If the buoyant force is equal to the object's weight, will the object float or sink?
500
Decrease
When the viscosity of a fluid increases, does the pressure exerted by the fluid decrease or increase?