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

Physical Sci. Ch.4

Physical Science Test Chapter 4

QuestionAnswer
2 or more substances combined, but not chemically joined mixtures
mixtures can be organized by ... ordinary ways
each substance in a mixture keeps ... its own properties
2 or more elements that are chemically joined (stuck together) compounds
compounds must have ... different properties than the substances that make them up
compounds must have bonds broken in order to ... separate the elements
a certain compound always has the same ...(ex. sodium chloride is NaCl) chemical formula
some compounds exist as ... molecules
a molecule is ... when atoms join by sharing electrons with eachother, they join in ratios
what can show how atoms in a compound are connected? a sketch
bond length the distance between the nuclei of two bonded atoms/the angle formed by 2 bonds to the same atom
does the structure of a compound affect the properties of the compound? yes
strong structures are made of ... bonded ions
high or low melting point?-compounds made of bonded ions have ( ) melting points ex.-salt high
there are 2 main types of bond's between atoms, and which type it is depends on ... its electonegativity
how much an atom attracts electrons in a bond electron electonegativity
one atom steals electrons from another atom ionic bond
opposites ( ) and ( ) together. attract, stick
what do ionic compounds conduct when they are melted or dissolved in water? electricity
ionic compounds stick together in ( ) not as ( ) molecules. they always ( ) eachothers charges. networks, individual, balance
ionic compounds have very ( ) melting points high
two atoms share electrons is called covalent bonds
atoms may share (2 words) of electrons or ( ) than one pair of electrons. one pair, more
O=O is a... double covalent bond (it shares 4 electrons)
H-H is a ... single covalent bond
a triple covalent bond shows ( ) lines 3, it shares 6 electrons
atoms may ( ) we call these polar covalent bonds. not share electrons equally
some covalent bonds have a ( ) or a ( ) charge. these are called ( ) positive, negative, poly atomic ions
covalent compounds have ( ) melting points than ionic compounds do. lower
we dont hear much about this bond metallic bond
( ) bond is similar yet different from the main 2 types of bond we just talked about(ionic and covalent) metallic
a bond formed by positively charged metal ions in an "ocean" or "soup" of electrons metallic bond
what can slide around in the "soup" of electrons from one nucleus to the next? ions
this type of bonding allows metals to conduct ( ) well. electricity
long molecules made of many smaller molecules bonded together. the smaller molecules that make them up are called monomers.(ex.- cotton, wool, rubber, plastics, DNA) polymers
Created by: darrl
Popular Science 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