Density
The units used for density
What is g/mL (mass/volume)
All matter is classified into two categories
The first modern model of an atom theorized by Dalton is described as
What is a billiard ball or sphere
The subatomic particle that contributes to charge, mass, and atomic number
What is proton
Contributes to the mass of an atom
What are protons and neutrons
What is the equation for density?
What is D=m/v
The two types of pure substances are
What are elements and compounds
The experiment where electrons were discovered performed by J.J. Thomson.
What is the cathode ray tube experiments
The subatomic particle found whizzing around the outside of the center of the atom
Used to find the number of electrons
protons - charge
The density of a neutrally buoyant object compared to the liquid
What is the densities are the same
The difference between a homogeneous and heterogeneous mixture
What are homogeneous mixtures are uniform in composition while heterogeneous mixtures are not uniform in composition.
The second model of an atom, theorized by Thomson, that includes electrons is described as
What is the Plum Pudding Model.
Space filled with low density "positive mist" with distinct piece (electrons) that can move within atom and are negatively charged
The subatomic particle that only contributes to mass found in the middle of the atom
What is neutron
Determines the type of isotope
What are neutrons
What is the density of water?
The homogeneous mixture consisting of one part dissolved in the other that wont scatter light
What is a solution
The experiment performed by Rutherford that proved the existence of a nucleus is
What is the Gold Foil Experiments
Is equal to the number of protons
What is atomic number
Electrons in an ion of Strontium (Sr) with a charge of +2.
36 electrons
What is the density of a rock with a mass of 10 g and a volume of 5 mL?
2 g/mL
The heterogeneous mixture that is cloudy, has extremely small particles that wont settle, and will scatter light
What are colloids
The third model of an atom, theorized by Rutherford, is described as
What is the Nuclear Model of the Atom.
All positive material condensed into the nucleus in middle of atom containing protons and neutrons. Electrons circle nucleus.
Is equal to the number of protons with the number of neutrons
What is atomic mass
Charge of an ion of Arsenic (As) with 36 electrons
-3