2017 Mod4 Flashcards
Write out the following terms:
A. Electrolysis
The use of electricity to break a molecule into smaller units
B. Polar molecule
a molecule that has slightly positive and negative charge due to an in balance in the way electrons are shared
C. Solvent
A liquid substance capable of dissolving other substances
D. Cohesion
The phenomenon that occurs when an individual molecules are so strongly attached to each other that they tend to stay together even when exposed to tension
F. Hard water
Water that has certain dissolved ions in it predominately calcium and magnesium ions
Suppose you did in and electrolysis experiment like experiment 4.1 on hydrogen peroxide, which has a chemical formula of H2 O2. If it works properly, which of the following results would you expect?
B. Equal amount of hydrogen and oxygen
Throws you were formed experiment 4.1 with a test tube that has a crack in it. Gas could slowly leak out of that crack, but not nearly as quickly as it was being made in the experiment. Suppose further that the crack was in the test tube that held hydrogen gas. Which chemical formula might result from such a botched experiment: HO or H4O
HO
Epsom salt, which you use an experiment for .1, has the chemical formula MgSO4. If MJ is the some more for magnesium, S sensors over, and all represent accident, how many of each Adam exists in a molecule of Epsom salts
One MG come out one S, 4O
Calcium carbonate is an ionic substances can only call Chuck. It is Mark you’ll have one calcium Adam CA, one carbon Adam see, and three oxygen Adams oh, what is the chemical formula?
CaCO3
One of the most common household cleaners is ammonia,which has the chemical formula of NH three. How many Adams are in a mile if you have Emmonak
4
A certain molecule is composed of Adams that pull on electrons with the same strength. Will this molecule be polar
No
Baking soda dissolved in water. Will it dissolves in the vegetable oil? Which is a nonpolar substance?
No
Carbon tetrachloride will not dissolve in water. Is it most likely to be made of ionic Marcus, pull him oculus, or nonpolar molecules
Nonpolar molecules
Suppose you were able to catch the macular’s in isn’t substance. Which would have more markets, 1 L of liquid water 1 L of ice
1 L of liquid water
Is the substance in question 10 virtually any other substance, what would the answer be?
The “ice”
