Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
kwiles C-2
chemistry
| Question | Answer |
|---|---|
| An atom is made of three sub-atomic particles. The negatively charges particle is called an ? | Electron |
| T or F: The number of electrons determine the identity of the atom? | False |
| The number of what sub-atomic particle determines the identity of the atom? | Protons |
| The sub-atomic particle with a neutral charge is a __________? | neutron |
| How many neutrons in an atom that has an Atomic weight of 17.01 and an Atomic Number of 8? | 9 |
| If an atom of Clorine has a negative charge then the atom is referred to as an__________ | ion |
| A five carbon sugar molecule with a positive charge on it is referred to as an _________ | ion |
| A charged atom or molecule is referred to as an ____________ | ion |
| Uranium-239 has more neutrons than Uranium-238.Such atoms are referred to as ___________? | isotopes |
| A type of chemical bond that involves the sharing of electrons between atoms is called_a _______? | covalent bond |
| T or F: Ionic bonds involve sharing of electrons between two different atoms? | False |
| A type of weak bond that only ocurrs with oxygen, nitrogen, and sometimes florine is a ________________? | hydrogen bond |
| Bonds that occur between two, oppositely charged ions are called ___________? | ionic bonds |
| Oxygen has an atomic weight of 16.01 and an atomic number of 8.00. How many neutrons does elemental oxygen have? | 8 |
| The symbol for a molecule of oxygen gas is? | 0sub2 |
| Is Co a molecule or an atom? | atom |
| Matter is defined as anything that takes up_______? | space |
| The basic unit of matter is an________________? | atom |
| T or F: In chemical reactions, matter can be destroyed? | False |
| If a chemical equation includes 6 carbon atoms on the reactant side, then how many carbon atoms must appear on the product side? | 6 |
| A ground state atom with 6 protons should have how many electrons to maintain electrical neutrality? | 6 |
| An atom of hydrogen has 1 proton and is missing an electron. So the atom would be called an ___________ and has a _________ charge | ion, positive |
| Weight is defined as ? | The force of gravity acting on a particular mass. |
| Does mass change with location? | No |
| Does weight change with location? | Yes |
| The energy required to initiate a chemical reaction is called the ___________ energy | activation energy |
| A chemical reaction in which the reactants are lower in energy than the products is called a ________________ reaction | endergonic |
| A chemical reaction in which the products are lower in energy than the reactants is called a _______________ reaction | exergonic |
| A biological catalyst does two things: What are they? | Decrease the activation energy and speed up the reaction. |
| A student mixes equal amounts of hydrogen and oxygen gases in a sealed test tube. He expects that a chemical reaction will take place and produce ordinary water. After severl weeks in the test tube there is still no water! Explain | The reaction requires activation energy. Perhaps the student could add heat and a catalyst such as nitrous oxide to speed the reaction. |
| Be able to interperet energy graphs (p 37 in text) | dito |
| The portion of a solution that gets dissoved is the ___________? | solute |
| The portion of the solution that does the dissolving is the _________? | solvent |
| HCL(aq) means that ? | hydrochloric acid has been dissolved in water |
| A saturated solution is a solution in which no more ___________ can be dissolved? | solute |
| A container holds 1 gallon of gasoline and 1 gallon of crude oil in solution. What is the solvent and what is the solute? | gasoline, oil |
| A solution that contains more hydride ions than hydroxide ions is called an ________? | acid |
| The pH scale starts at 0 and goes to _? | 14 |
| Distilled water has just as many hydroxide ions as hydride ions. The pH is ________ and such solutions are referred to a ________ solutions | 7, neutral |
| By definition, a solution that contains a higher concentration of hydroxide ions than hydride ions is a __________ or __________ | base or alkaline |
| A solution with a pH 9 has how many times more hydroxide ions than hydride ions than a solution with a pH of 7? | 100 |
| A solution with a pH below 7 is an ? | acid |
| What is the atomic number of an atom with 17 protons? | 17 |
| what is the definition of the word endergonic? | a chemical reaction in which products of the reaction are higher in energy than the reactants. |
| what is the definition of the word exergonic? | a chemical reaction in which the products are lower in energy that the reactants. |
| Be able to find the energy of activation for a reaction on a graph and account for total energy in the reaction. | see class notes on energy of reaction graphs. |
| A Cl ion is negative. That means that a Cl atom that was neutral gained or lost a _____________ | gained an electron |
| A Mg ion has a plus 2 charge. That means that Mg atom that was neutral has gained or lost _______________ | lost 2 electrons |
| OH- is a ? | hydroxide ion |
| H+ is a | hydron or hydronium ion |
| H+> OH- | Acid |
| [H]+ <[ OH]- | Base |
| [H]+ = [OH]- | neutral solution |
| The study of disease(s) is called / | Pathology |
| The study of the structural parts of an organism such as bones , muscles, brain or any part is called ? | Anatomy |
| Botany is the study of ? | Plants |
| Herpetology is the study of ? | reptiles |
| Biochemistry is the study of ? | Those molecules important to all carbon based life forms |
Created by:
kwiles
Popular Biology sets