Chemistry 105 pt 1 – Flashcards
Unlock all answers in this set
Unlock answersquestion
Gases are a state of matter that have a variable volume, but a fixed shape. |
answer
false |
question
Matter is anything that has mass and takes up space. |
answer
true |
question
Archaeological evidence showed that the ancient Egyptians were brewing beer and other fermented beverages over 4000 years ago. In the mid 1900-s, the French scientist Louis Pasteur discovered and explained that microscopic yeasts were what caused fermentation. This example shows that |
answer
technological knowledge may come before scientific knowledge |
question
A spring scale is affected by gravity. |
answer
true |
question
a measurement of the amount of matter |
answer
mass |
question
Boris, a chemist ,suggests that increasing the amount of acetone in his nail polish remover will make the polish dissolve faster. His proposal is called |
answer
a hypothesis |
question
Which of the following is NOT part of Dalton's atomic theory? |
answer
Atoms change into other atoms in chemical reactions. |
question
Which of these sciences has the most variables to consider when doing an experiment? That means, which is the hardest of these sciences to reproduce experiments? |
answer
biology |
question
Sodium reacts with water to form sodium hydroxide and hydrogen gas. This an example of a |
answer
chemical property |
question
What is the name of the element with the chemical symbol N? |
answer
Nitrogen |
question
a positively-charged ion in solution |
answer
cation |
question
charged atoms or groups of atoms |
answer
ions |
question
If the electronegativity difference between two elements in a compound is MORE than 2.0, that compound will be |
answer
ionic |
question
The element on the periodic table with the highest electronegativity is |
answer
fluorine |
question
Which family of elements does not bond with anything? |
answer
noble gases |
question
Sodium Chloride is an ionic compound |
answer
true |
question
The identity of an element is determined by the _________ of the element |
answer
number of protons |
question
Elements on the left side of the periodic table usually have ____ electronegativity values |
answer
low |
question
What is the maximum number of electrons that can be held in the "K" shell? |
answer
2 |
question
When two chlorine atoms bond to form chlorine gas, the resulting molecule is |
answer
perfectly covalent |
question
Another name for sodium hydroxide ( NaOH ) is |
answer
lye |
question
If you mix together vinegar and baking soda, hydrogen gas is released. |
answer
false |
question
H3O+ is called the |
answer
hydronium ion |
question
Hydrochloric acid is a component of toilet bowl cleaner |
answer
true |
question
Sulfuric Acid is in the battery of your car. |
answer
true |
question
Which is NOT a characteristic of acids? |
answer
tastes bitter |
question
Which of these is a characteristic of a base? |
answer
feels slippery |
question
Under what name is hydrochloric acid sold in the hardware store? |
answer
muriatic acid |
question
Baking soda reacts with vinegar to form, among other things |
answer
carbon dioxide |
question
Acetylsalicylic acid is the active ingredient in vinegar. |
answer
false |
question
Extremely fast oxidation, accompanied by a vast expansion of the gasses that are the products of the reaction is called an |
answer
explosion |
question
A standard AA, C and D "dry cell" batteries have cases that are made of |
answer
zinc |
question
The reduction agent that is commonly used in the production of iron from iron oxide is |
answer
coke |
question
Electrons change places when oxidation happens. What happens to the element undergoing oxidation? |
answer
The element gives up electrons. |
question
When you did the pennies and nail experiment, the iron in the nail was higher on the activity series. |
answer
true |
question
On a normal steel bridge, not Corten, the rust that occurs is only on the surface and cannot damage the structural integrity of the bridge. |
answer
false |
question
When oxygen combines rapidly with a compound, such as methane (CH4), heat is released. Another name for this type of oxidation is |
answer
combustion |
question
Reduction is often referred to as the |
answer
recovery of a metal from its "ore." |
question
What is the liquid in your car’s battery? |
answer
sulfuric acid |
question
An oxidizing agent that is a disinfectant is |
answer
chlorine |
question
The carbon/hydrogen molecules that have the ending "ane" have |
answer
all single bonds |
question
If a carbon/hydrogen molecule has a double bond, the molecule is said to be |
answer
an alkene |
question
The benzene molecule just has regular double bonds, like any alkene. |
answer
false |
question
The unique aspect of a saturated hydrocarbon is that it must contain |
answer
only single bonds |
question
Molecules that are composed of only hydrogen and carbon atoms are called |
answer
hydrocarbons |
question
Ethyne is |
answer
an alkyne |
question
What do you call a molecule that has six carbons and twelve hydrogens and is in a circle? |
answer
cyclohexane |
question
The four strokes of the gasoline engine, in order, are intake, compression, power and exhaust. |
answer
true |
question
The maximum number of bonds that a carbon atom can engage in is |
answer
four |
question
The simplest alkane is |
answer
methane |
question
The alcohol in windshield wiper fluid is |
answer
methanol |
question
When a carboxylic acid and an alcohol are mixed, they can form |
answer
an ester |
question
Aldehydes and ketones both have an interesting functional group that defines them. This C=O group is called the _______ functional group. |
answer
carbonyl |
question
The simplest aldehyde is |
answer
methanal |
question
Diethyl ether has been an important anesthetic. Ethers are interested because they have a _______ atom in their chain. |
answer
oxygen |
question
The formula of methanol is |
answer
CH3OH |
question
A bottle of rum is labeled as 80 proof. What is the percentage of alcohol in this? |
answer
40% |
question
The effective ingredient in most antifreeze is |
answer
ethylene glycol |
question
Vinegar is a solution of ____________ and water |
answer
acetic acid |
question
[image] |
answer
ester |