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;
25 Cards in this Set
- Front
- Back
|
What are the properties of a solid?
|
Has a definite volume and shape. Particles have little movement and low kinetic energy.
|
|
|
What are the properties of a liquid?
|
Has a definite volume and no definite shape. Particles are held together but are moving faster than in a solid. Has a higher kinetic energy.
|
|
|
What are the properties of a gas?
|
No definite shape or volume. Particles are not held together an and have lots of random movement. Very high kinetic energy.
|
|
|
What are the charecteristics of an element and how many are naturally occuring in nature?
|
Substances composed of only ONE type of atom. 117 known and only 90 are naturally occuring
|
|
|
What is a compound?
|
Two or more elements held together by a chemical bond and the elements no longer retain their original properties.
|
|
|
What is an atom?
|
Smallest particle of an element that retain the charecteristic properties of that element. Composed of electrons and nuetrons.
|
|
|
What is a molecule?
|
The smallest unit of a compound that still retains the properties of the compound. (SUGAR)
|
|
|
What are ionic compounds?
|
Composed of ions, sodium chloride (table salt)
|
|
|
What are physical properties?
|
Properties that can be observed and measured without changing the composition of a substance.
|
|
|
Qualitative v.s. Quantitative
|
Qualitative is Quality. Examples are color, size, hot or cold, state.
Quantitative deals with numerical info. Examples are the length and exact temperature. |
|
|
What is ductility?
|
How easily can a solid be drawn into a wire.
|
|
|
What is malleability?
|
How easily can a solid be deformed. (malling someone)
|
|
|
What is a hypothesis?
|
Educated guess based on experimental observations
|
|
|
What is a law?
|
A concise verbal or mathematical statement of a behavior or a relation that is consistently observed in the nature without contradiction
|
|
|
What is a theory?
|
A well tested principle explaining a body of facts and laws based on them.
|
|
|
What is a heterogeneous mixture and give examples.
|
An uneven mixture of material. Examples are blood and milk.
|
|
|
What is a homogeneous mixture and give examples.
|
Mixture of two or more substances that can be seperated physically without changing them on a molecular leve. Also called solutions.
|
|
|
Extensive v.s. Intensive
|
Extensive depends on how much there is. (mass, volume)
Intensive does not depend on how much there is. (density, melting point) |
|
|
What is a chemical change?
|
Change where one or more substances are transformed into one or more different substances.
|
|
|
What is a pure substance?
|
A single substance that cannot be seperated by a physical technique. (Gold, pure water)
|
|
|
What is a chemical property?
|
How readily a material undergoes a chemical change with another material. (Flamability)
|
|
|
What is a physical change?
|
Changes in physical properties. (dissolving something, melting)
|
|
|
Classify as Hetero or Homo
carbonated soda salt water tea mercury |
homo
homo homo Pure substance |
|
|
What is the Kinetic-Molecular Theory?
|
All matter consists of particles that are constantly in motion.
|
|
|
As temperature increases what happens to the kinetic energy?
|
It increases
|
