Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Unit 4: Chem

QuestionAnswer
In comparison to other things, how small is an atom? How would we know just how small it is?
What are the subatomic particles that make up an atom? Protons, neutrons, and electrons.
What are their charges and where are each of them found? Protons (positive) and neutrons (neutral) are in the nucleus, and electrons (negative) are in the space around the nucleus.
Can scientists pinpoint exact locations of electrons? Why is the drawing of a perfect circle around the nucleus not a good representation of where electrons are found? No, scientists can't.
Are all the subatomic particles equal in mass? No, protons and neutrons are equal in mass, while electrons have a much smaller mass.
Why are the atoms that we practiced drawing always neutral? Because they had equal numbers of protons and electrons.
What is the name for the electrons that are available to bonding? Valence electrons.
What are the two types of bonds that we talked about? Define. Covalent bonds are where electrons are shared between atoms. Ionic bonds are bonds in which electrons are transferred from one atom to another.
Be able to recognize an ionic bond if a drawing of one is placed in front of you. You should be able to recognize the transfer of an electron over the another atom. Aight
Be able to analyze a picture of a covalent bond happening. Aight
What is an element? An element is a substance in its simplest form; cannot be broken down any further.
What is a compound? What is a molecule? What is the difference? A compound is a molecule with two or more elements. A molecule is two or more atoms bonded together.
What characteristics allows water molecules to behave in a "sticky" way? (think about it's shape and where electrons are found) Water has two hydrogen atoms. Electrons are not as present around the hydrogen atoms, and more present around the oxygen atom. This allows the hydrogen to bond to more oxygen atoms.
What bonds are formed between water molecules to make them stick to each other? Hydrogen bond
How would an organism utilize the cohesive properties of water?
How would an organism utilize the adhesive properties of water?
Why is water so important?
How is surface tension created? How were the paper clips able to float on the water even though they were metal? The water molecules want to cling to each other. There are no water molecules above the surface of the water (just air). This results in a stronger bond at the surface.
What is organic chemistry? Organic chemistry is the chemistry of carbon compounds.
Why is the carbon atom used in so many things? (Think about its structure) It can bond with many elements because it has four valence electrons, creating long, stable chains.
What is an organic molecule or macromolecule? How is carbon able to form these?
What are the 4 organic molecules that we looked at? Carbohydrates, lipids, nucleic acids, proteins
Know the monomers for each of the 4 organic molecules. Carbohydrates -- monosacchride (simple sugar) Lipids -- fatty acids and glycerol (triglyceride) Proteins -- Amino acids Nucleic Acids -- Nucleotide
Hoe do body systems rely on organic molecules?
If given a story problem about a persons health be able to figure out which nutrient (or macromolecule or organic molecule) is missing. Aight
Which organic molecule provides us with energy? Carbohydrates
How are carbohydrates used by the human body? Used for energy
How are lipids used by the human body? What systems ? Energy storage and the building block for cellular components;
Be ready to evaluate different organic molecules and how they are used in the body. Aight
Why are organic molecules important to life in general?
Created by: alexs13
Popular Chemistry sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards