Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
Three principal states of matter
|
solid, liquid and a gas
|
|
|
Characteristic Property Examples
|
boiling point and melting point
|
|
|
Atom
|
the smallest particle of an element
|
|
|
Molecule
|
group of atoms that are joined together and act as a single unit
|
|
|
Volume
|
length x width x hieght: mabe be measured in cubic cm
|
|
|
Mass
|
the amount of matter in an object - not weight
|
|
|
Density
|
measurement of how much mass is in a given volume
|
|
|
The force of gravity
|
determines the weight of something
|
|
|
Mixture
|
when two or more substances are mixed together but not chemically combined (ex. sand)
|
|
|
Solution
|
A really well mixed mixture (ex. juice)
|
|
|
Pure Substance
|
something that is made of one kind of matter with definate properties
|
|
|
Element
|
pure substances that cannot be broken down into other substances
|
|
|
Compound
|
pure substance that is made up of 2 or more elements that are chemically bonded
|
|
|
Chemical Bond
|
force that holds 2 atoms together
|
|
|
Physical change
|
the form of a substance is changed, but it's idenity stays the same
|
|
|
Chemical Change
|
subtances combine or break apart to from new substances
|
|
|
Dalton's Ideas
|
*All atoms are alike in an element
*Atoms of an element have their own unique mass *Atoms cannot be broken down into smaller pieces *Atoms of 2 or more elements can combine to make a compound *The masses of elements in a compound are always in a constant ratio |
|
|
Ore information
|
The useable metal in deposits is called ore. An electrode is used to attract metal in ore. Iron is seperated from ore by heating it with carbon dioxide.
|
|
|
Find the density of an object with a mass of 22 grams and a volume of 11cm.
|
2 g/cm (to the third power)
|
|
|
Common Units for Mass, Volume, and Density
|
cm cubed, cm squared, g/cm cubed
|
