Chem CH. 3
What is a compound that conducts electricity when molten or dissolved in water?
What is a carbon rod or metallic strip that carries electrical current?
What is a positive electrode?
What is a negative electrode?
What is an atom or group of atoms with a charge?
What is a negative ion?
What is a positive ion?
What is the spontaneous emission of particles or rays from unstable atomic nuclei?
Which form of radioactivity is a particle consisting of 2 protons and 2 neutrons; a helium nucleus?
Which form of radioactivity is made up of negatively charges particles identical to those of cathode rays?
Which form of radioactivity is most penetrating?
What is the chemical symbol of Mercury?
What is the chemical symbol of Silver?
What is the chemical symbol of Helium?
What is the chemical symbol of Uranium?
What is the chemical symbol for gold?
Which side of the periodic table are metals found?
What is the difference between a substance and a mixture?
A substance is like a collection of particles (all one element or compound) whereas a mixture is like a combination of substances
Is carbon dioxide gas a mixture or a substance?
What is the SI unit for temperature?
Which substance would sink mercury instead of floating it?
What is the charge of a gamma ray?
What is the charge of an alpha particle?
What is the charge of a beta particle?
-1 (its an electron)
What is the mass of a beta particle?
What is the mass of an alpha particle?
What is the mass of a gamma particle?
Which radioactive particle is least penetrable?
List the radioactive particles from fastest to slowest?
gamma, beta, alpha
The positive particles had varying masses in _____ experiments using a ____ discharge tube with perforated _____.
What are cathode rays beams of?
Who determined the charge of an electron?
Which type of radioactivity is
deflected by a magnetic field?
Where is most of the mass of an atom located?
Who's model showed the protons and neutrons in the nucleus and electrons surrounding it?
What is the chemical symbol of Flourine?
What is a deuterium?
an isotope of hydrogen that contains 2 nucleons
What is the light spectrum?
a specific pattern of colors emitted by excited atoms
How can you tell if an atom is in ground state or excited state?
ground state is all the inner shell are fully filled ; excited if one of the outer shells is filled before filling the inner ones
How many electrons can the third shell hold?
How many electrons can the first shell hold?
How many electrons can the second shell hold?
Where are the Alkaline Earth metals located?
on the left, 2nd period
Chem CH. 3