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Atomic Structure
Chem/Phys or Int/Ext
Isotopes
Sci Method/Lab Safety
Random
100
This atomic particle has a negative charge.
What is an electron?
100
Frying eggs.
What is a chemical change?
100
These two things need to happen in order for two elements to be isotopes.
Atomic number (protons) must be same but neutrons, and thus atomic mass must be different.
100
A hypothesis should be written in this form.
What is "If ________ , then ________ ."?
100
The 3 most common phases of matter on Earth.
What are solids, liquids, and gases?
200
These are two atomic particles found in the nucleus.
What are protons and neutrons?
200
Density.
What is intrinsic? 100 bonus points for explanation!
200
Two atoms have the following characteristics. Are they isotopes? Atom 1: 5 protons, 5 electrons, 6 neutrons Atom 2: 5 protons, 8 electrons, 6 neutrons
What is NO. Different number of electrons, same number of protons and neutrons.
200
This should be used first if a fire should occur in the lab.
What is the fire blanket?
200
Draw a representation of an atom with 8 protons, 8 electrons, and 10 neutrons. First team to show it to me gets the points.
Atomic mass 18, atomic number 8.
300
Of the three atomic particles, these have the greatest mass.
What is a neutron?
300
These are some observations that indicate a chemical change could be taking place. (Name 4)
What are color change, odor, heat, light, fizzing/foaming, and sound?
300
What is the average atomic mass for the following isotopes? - 2 atoms of 15 amu - 3 atoms of 16 amu - 3 atoms of 17 amu
What is 16.125 amu?
300
This should state whether or not a hypothesis was correct.
What is a conclusion?
300
Anything that occupies space and has mass? *Bonus for 100 points: what makes up that mass?
What is matter? *Bonus: Mostly neutrons and protons (atomic mass) with some help from electrons.
400
In a neutral atom the atomic number, or number of protons, is also equal to this.
What is the number of electrons?
400
Color.
What is intensive?
400
The two atoms below are isotopes. What is the difference between them? BE SPECIFIC! Atom 1: atomic mass of 13 Atom 2: atomic mass of 15
Two neutrons.
400
This can be manipulated by the experimenter to possibly change the outcome.
What is an independent variable?
400
It takes approximately 1,830 of these to equal the mass of one proton.
What are electrons?
500
This has a definite volume, but not shape.
What is a liquid?
500
Explain why salt dissolving in water is a physical change.
Can be separated by physical means. Evaporating the water leaves the salt behind.
500
What is the average atomic mass for a sample of isotopes that is: - 15% 21 amu - 20% 22 amu - 25% 23 amu - 40% 24 amu
What is 22.9 amu?
500
This is written on the chalk board in the lab.
What is "If you came over to the lab without getting permission first, then you have just lost 200 points. If you did, then enjoy your 500!"?
500
The atomic theory came from this man.
Who is John Dalton?