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;
19 Cards in this Set
- Front
- Back
|
Matter is either 1 of 2...?
|
Heterogeneous (not the same throughout), or Homogeneous (the same throughout)
|
|
|
Matter is...
|
Anything that has maa and occupies space
|
|
|
Matter is futher subdivided into 3 general classes based on chemical or physical properties. These are...
|
1. Compound
2. Element 3. Mixture |
|
|
A compund is...
|
a pure substance composed of 2 or more elements which has new properties of its own unlike the properties of the orignal substance
|
|
|
Table salt aka sodium chloride is an example of..
|
A compound
|
|
|
An element is...
|
A substance composed of only one kind of atom that can no longer be decomposed by ordinary chemical means
|
|
|
Silver and nitrogen are example of...
|
An element+
|
|
|
A mixture is...
|
a material compsed of 2 or more substances, each of which retains its own physical properties
|
|
|
True or False: Mixtures can be heterogeneous or homogeneous?
|
True
|
|
|
Charateristics that undergose no change in composition
|
Physical properties
|
|
|
True or false: mixtures are separated using their physical properties?
|
True
|
|
|
Changes in which no new kind or matter are formed
|
Physical change
|
|
|
True or false: Mixtures cannot be seperated bt physical seperation-filtration, evaporation, thawing, distillation, precipitation, or by boiling
|
False
|
|
|
How a substance changes into something new
|
Chemical properties
|
|
|
By asking questions such as does it burn helps determine the _________ __________ of a substance
|
Chemical properties
|
|
|
Changes that produce new kinds of matter that show brand new properties
|
Chemical changes
|
|
|
True or false: compounds are the products of chemical changes. They cannot be broken down phyiscally, but can be seperated chemically
|
True
|
|
|
A compound always comtains elements in certain definite compostion by having the same % by mass of each element in the compund
|
Law of definite composition
|
|
|
There can exist two or more compunds with different proportions of the same element
|
Law of multiple proportions
|
