Show:
Matter
Properties/
Changes
Measure Up
Atoms
Scientists
100
A liquid changing to gas
What is evaporation
100
Characteristics that can be observed without changing the composition of a substance
What are physical properties
100
The amount of matter and the gravitational force
What is weight
100
Atoms of the same element with a different number of neutrons
What is isotope
100
He discovered the electron
Who is Thompson
200
Matter with a constant composition
What is pure substance
200
Sodium metal reacting in the presence of water
What is a chemical property
200
The amount of matter in a given amount of space
What is density
200
Indicates the number of protons
What is atomic number
200
He discovered the nucleus
Who is Rutherford
300
A pure substance that is made of two or more atoms chemically bonded together
What is compound
300
A property that is independent upon the amount of matter present
What is an intensive property
300
The base unit used to measure length
What is meter
300
A spectrum where all the wavelengths of light are visible
What is continuous spectrum
300
He stated the electrons in an atom traveled around the nucleus in only certain allowed circular orbits
Who is Bohr
400
A mixture with a different composition throughout
What is heterogeneous
400
A change in the form (or state) of a substance
What is physical change
400
Refers to how close a measured value is to an accepted value
What is accuracy
400
When the electrons are located in the lowest possible energy level of an atom
What is ground state
400
He arranged the elements into groups of three elements with similar properties
Who is Dobereiner
500
A pure substance that is made of only one kind of atom
What is an element
500
Burning paper is an example of this type of change
What is chemical
500
The amount of space an object or substance occupies
What is volume
500
Indicates the number of protons plus the number of neutrons
What is atomic mass
500
The chemist that was able to successfully predict the existence of unknown elements
Who is Mendeleev