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Vocabulary
chemical formulas
measurements
changes and reactions
atoms
100
defined as the continuing search for scientific knowledge
What is pure science
100
Are forces that hold different atoms or ions together
What is chemical bonds
100
If Maria is 123 centimeters tall she is also this many meters
What is 1.23
100
Process of gaining or losing electrons
What is ionization
100
According to Bohr electrons behave like
What is planets orbiting the sun
200
refers to the change of state form a liquid to a gas, without boiling
What is evaporation
200
These always contain the same elements in the same proportions
What is compounds
200
Decimal equivalent to ten to the negative 2
What is .01
200
A change in color is an example of this kind of change
What is chemical
200
According to Bohr, an electron's path around the nucleus defines this
What is its energy level
300
Relates temperature of a gas to its pressure
What is Gay- Lussac's law
300
Is the reason that ionic compounds have very high melting points
What is network structure
300
A measurment that is as exact as possible
What is accurate
300
A reaction in which new complex materials are formed
What is synthesis
300
Atoms of elements in the same group have the smae number of these
What is valence electrons
400
Temperature is the average ___ energy of the particles in the object
What is kinetic energy
400
type of bond where atoms share electrons
What is covalent
400
Mass in grams of one mole of substance is the definition of this
What is molar mass
400
reaction in which substances are broken down into simoiler substances. Digestion is an example
What is decompostion
400
These are elements that can cinduct heat or electricity under certain conditions
What is semiconductors
500
Change of a substance directly from a solid to a gas
What is sublimation
500
A polymer made of amino acids
What is protein
500
The density of this material is 1.0 g/cm cubed
What is water
500
Iron does this when it reacts with oxygen to form rust
What is looses three electrons
500
Atoms have the same number of these so they have no electric charge
What is Protons and electrons