What is the term for the average mass of all isotopes of an element?
Atomic Mass
100
______ is the study of matter and how matter changes.
Chemistry
100
This is what you call a change of state from a liquid to a gas.
Vaporization
100
This is a factor that can change in an experiment.
Variable
100
This is a characteristic of a liquid. It is the result of an inward pull among the molecules of a liquid that brings the molecules on the surface closer together. It is called ________________ __________________.
surface tension.
200
What is the term for the number of protons in the nucleus of an atom?
Atomic Number
200
____ is a state of matter with NO definite shape or volume
Gas
200
What vocabulary term means two or more mixtures are mixed together but not chemically combined
Mixture
200
This is a possible explanation for a set of observations or answers to a specific scientific question. It is something that can be tested. It is called a ____________.
Hypothesis.
200
The temperature at which a liquid boils is called the ________ _________.
boiling point.
300
The measurement of _______ shows how much mass of a substance is contained in a given volume.
Density
300
This term define a liquids resistance to flowing. This is called its _____.
Viscocity
300
A __________ mixture is one in which pure substances are unevenly distributed throughout the mixture.
heterogenous
300
When you change a factor in an experiment, it is called a _____________ ______________.
Manipulated variable.
300
What is the system called that scientists use to measure the properties of matter & science?
The International System of Units
400
What word is used to described the one or two letter representation of an element?
Chemical Symbol
400
___________ is a solid that is made up of crystals in which particles are arranged in a regular, repeating pattern.
Crystalline Solid
400
_____ is an example of a homogenous mixture; forms when substances dissolve.
Solution
400
When there is an experiment in which all factors except one remain constant, it is called a _____________ experiment.
Controlled.
400
Volume = ?
Volume = length x width x height
500
This is the basic particle from which all particles are made.
Atom
500
________ is a solid made up of particles that are not arranged in a particular pattern.
Amorphous solid
500
You must answer both questions to get the 500 points:
1)What is the process that occurs when vaporization takes place only on the surface of a liquid ?
2) Density = ?
1) Evaporation
2) Density = Mass divided by Volume
500
This is a statement that sums up what you have learned from an experiment.