The Atom
Name the three subatomic particles
Proton, Neutron, and Electron
What are the three states of matter
Solid, Liquid, and Gas
The scientist that first proposed the idea that the center of an atom contains a nucleus with positively charged protons was
Ernest Rutherford
Matter is anything that has ________ and ________
Mass and Volume
What is the charge of a electron
Negative 1
What is the density of a substance that has a volume of 60 mL and a mass of 93 g?
1.55 g / mL
Which scientist first proposed the idea that all atoms of the same element are identical? (For example, a bar of gold is only made up of gold atoms.)
John Dalton
What does KMT stand for
kinetic molecular theory
Where are protons and neutrons found in the atom?
Nucleus
Rank the following from most dense to least dense: 1.1 g/ml, 0.75 g/ml, 1.3g/ml
1.3g/ml, 1.1 g/ml, 0.75 g/ml
Who came up with the type of diagram shows the electrons in rings around a nucleus
Niels Bohr
The Freezing point of water is 0 degrees celsius is an example of what type of property?
Quantitative
What subatomic particles contribute to the atomic mass
Proton and Neutron
What is the density of a jellybean if a 7.3g jellybean has a volume of 3.4ml?
2.15 g/ml
The scientist that first proposed the idea that an atom is like “plum-pudding”, in which electrons are the plums was
J.J. Thomson
When a liquid is heated, what happens to the spaces between its particles?
When a liquid is heated, the spaces between its particles increase.
How many neutrons does Oxygen have?
8
You find a ring with a mass of 214 g. You fill a graduated cylinder up with 20 mL of water and put the ring in the cylinder. The water rises up to the 25 mL mark. What is the density of the ring?
V = 25 mL – 20 mL = 5 mL
D = 42.8 g / mL
What experiment did J.J. Thomson do to prove that electrons exist
Cathode ray tube
Describe how the particles of a gas move according to KMT
Fast and far apart