It Matters
An educated guess, based on preliminary research and broad ideas, that can then be tested and verified, or not.
What is a hypothesis?
The different states of matter, such as solids, liquids and gases.
What are phases?
The temperature at which a substance transitions from a liquid to a solid.
What is the freezing point?
Takes place in definite proportions, and results in the formation of new compounds and/or elements. It involves the breaking of bonds and the formation of new ones.
The temperature at which a liquid changes into a gas.
What is the boiling point?
The mathematical formula used to calculate density.
D = M/V
Density = Mass divided by volume
Letters that give meaning to a numerical value. They define the magnitude of a physical quantity.
(hint: think F/C, milliliters, grams, etc)
What are units?
The degree of closeness between a measured value, and its actual value.
What is accuracy?
When particles fill out evenly to fill a space.
(hint: Think of a tea bag placed in a cup of water)
What is diffusion?
A phase transition in which a liquid rapidly changes to a gas.
What is boiling?
The process in which a liquid undergoes a phase change to become a solid.
What is freezing?
A state of matter that is characterized as having definite volume, but no definite shape.
What is a liquid?
The pressure caused my gas particles hitting the side of the container surrounding them.
What is gas pressure?
The name to describe the thickness of a liquid.
What is viscosity?
A state of matter in which the object has a definite shape and volume.
(hint: There are 3 states of matter, one of them is fixed in shape and volume)
What is a solid?
The process in which a solid changes phases into a liquid.
What is melting?
The degree of closeness between repeated measurements. How close the results of multiple trials of something are to each other.
What is precision?
What is a physical property?
The temperature at which a substance transitions from a solid to a liquid.
What is the melting point?
The method of expressing extremely large or extremely small numbers, using powers of 10.
(hint: 3.4 x 104 or 3.4 x 10-7)
What is scientific notation?
A measure of the average kinetic energy of the particles in a substance.
What is temperature?
A phase change in which a substance transitions from the gas phase, to the liquid phase.
What is condensation?
The process in which a solid transitions directly into a gas, without becoming a liquid first.
(hint: they now use this process in printing designs on t-shirts)
What is sublimation?
A system of measurement based on multiples of 10 and the decimal. The based unit of measure is the meter.
(Hint: Most of the world uses this system. The USA is one of the only countries that has not fully adopted it.)
What is the metric system?
A state of matter in which the particles move about freely, with no structure. It will always fill the container it is in, assuming its size and shape.
What is a gas?