A word meaning "the measurement of elements". It is used to CONVERT between elements or compounds in a chemical reaction.
What is stoichiometry?
100
The name for the vertical columns on the periodic table.
What is a group?
100
The name of units used globally to help scientist share data. The base forms of these are meter, kilogram, liter, and second.
What are SI units?
100
The amount of significant numbers in 192
What is three significant figures?
100
The best high school in Desoto County.
What is Southaven High School?
200
The reactant that limits your chemical reaction.
What is limiting reagent?
200
The name for the horizontal rows on the periodic table.
What is a period?
200
Atoms of the same element that have different masses. They vary in the number of neutrons.
What is an isotope?
200
The amount of significant figures in 0.0034
What is two?
200
The class we are in right now. Also defined as "the study of matter."
What is chemistry?
300
The element or compound that you have more than enough of to perform the chemical reactions.
What is excess reagent?
300
The number on the periodic table indicating the number of protons.
What is the atomic number?
300
A place where an electron is likely to be found. As these get farther away from the nucleus, the amount of energy they have increases.
What is an orbital?
300
The amount of significant figures in 0.00000430000.
What is six?
300
A loyal companion. Commonly called "man's best friend." If you ask Ms. Jansen about hers, it will waste 5 minutes of class because she'll brag about them.
What is a dog?
400
In the balanced chemical equation shown:
3 NaBr + H3PO4 ---> Na3PO4 + HBr
3 moles NaBr/ 1 mole HBr is the ________.
What is mole ratio?
400
The element Fluorine has 10 of these?
What is the number of neutrons?
400
A measure if the ability of an atom to attract electrons from another atom. Fluorine has the largest of these values and the value decreases as you move to the left and down the periodic table.
What is electronegativity?
400
This number to 3 significant digits: 3.98630924
What is 3.99?
400
A lovely lady who loves chemistry and teaching. She tries too hard to be funny but enjoys seeing her students learn chemistry.
Who is Ms. Jansen?
500
YOU MAY USE A CALCULATOR:
When 3.4 moles of hydrogen gas reacts with oxygen, the amount of moles of water is ________
What is 3.4 moles of water?
500
These elements are found to the right of the periodic table. They are usually found in a gas form at standard temperature and pressure. They form covalent bonds when they bond to each other.
What are nonmetals?
500
When one element replaces a similar element in a compound. This can be seen when zinc and hydrochloric acid react.
What is a single displacement reaction?
500
They are used in order to unify measurements throughout the world, keeping them consistent. It allows scientist to see which numbers are accurate and precise.
What is the importance of significant figures?
500
You have three minutes to solve the following problem, you can work with your group, the three minutes start when I start the timer:
Magnesium and hydrochloric acid react by a single displacement reaction. What is the mass of magnesium needed to produce 4.8 grams of hydrogen gas?