semester exam Flashcard

List the scientific method in order:
Observe, Hypotheses, Test, Conclude
Who is credited with finding the proton?
Rutherford
Who is credited with finding the neutron?
Chadwick
Changes in matter that do not change the composition of a substance are called:
Physical
Any condition that changes is called a:
Chemical Change
This type of property can only be observed when a substance is changed into another substance:
Chemical
The building blocks of matter are called what?
Atoms
Who is credited with creating the atomic theory of matter?
Dalton
Who is credited with finding the electron?
Thompson
What is the charge of the electron?
Negative
What is the charge of the proton?
Positive
What was the first model of the atom called?
Plum pudding
List the four states of matter from the highest energy level to the lowest energy level:
Plasma, Gas, Liquid, Solid
What does the atomic number tell you?
Number of protons and electrons
What does the mass number tell you?
Number of protons and neutrons
Who discovered quanta and eventually led to the discovery of Quantum Mechanics?
Plank
Who discovered the photoelectric effect?
Einstein
Who discovered that electrons were located in orbits?
Bohr
List atlest 3 types of electormagnetic waves:
Microwave, Light Wave, X-ray, Radio Wave
The vertical columns in the periodic table are called:
Groups
The horizontal rows in the periodic table are called:
Periods
Alkali Metals are found in what group on the periodic table?
A1
Alkaline Earth Metals are found in what group on the periodic table?
2A
Halogens are found in what group on the periodic table?
7A
Chalcogens are found in what group on the periodic table?
6A
Noble Gases are found in what group on the periodic table?
8A
Who is credited with the creation of the periodic table?
Mendeleve
As you get closer to the Noble Gases, what happens to the ionization energy levels?
Decreases
A negative charge is called what?
Cation
A positive charge is called what?
Antion
What bond shares electrons?
Covalent Bonds
What bond gives and takes electrons?
Ionic Bonds
An atom that gains an electron will have what charge?
Negative

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