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;
27 Cards in this Set
- Front
- Back
In all chemical and physical reactions there is neither a gain or loss in mass due to what law?
|
The Law of Conservation of Mass.
|
|
The melting point of a substance is "EXACTLEY THE SAME" as what?
|
Its freezing point.
|
|
What is solubility?
|
A characteristic property of a given solid in a given volume of liquid at a given temperature/or/
the characteristic property of how dissolvable a solid is. |
|
What is a Solute?
|
the solid that is dissolved.
|
|
what is a solvent?
|
the liquid that does the dissolving.
|
|
what is a solution?
|
2 substances equally mixed together.
|
|
what is a concentration?
|
the mass of solid per given volume of liquid
|
|
What is a precipitate?
|
the amount of solid coming out of a saturated solution as a substance is cooled.
|
|
what is a mixture?
|
a substance formed when 2 or more elements or compounds do NOT unite in a fixed ratio.
|
|
what is a compound?
|
a substance formed when 2 or more elements or compounds DO unite in a fixed ratio.
|
|
what is an element?
|
a simple substance that cannot be divided into simpler substances by ordinary chemical means (heat, electricity, acids or bases).
|
|
what is a pure substance?
|
an element or compound that cannot be separated by physical means (distillation, filtering, fractional crystallization, skimming, or paper chromatography)
|
|
what does density equal?
|
mass divided by volume.
or M / V |
|
what does volume equal?
|
Mass divided by density.
or M / D |
|
what does mass equal?
|
Volume times density.
or V x D |
|
what does volume equal?
|
Length times width times height.
or L x W x H |
|
define homogenous
|
the appearance of 1 pure substance.
like homogenized milk. (cant see different parts to it, looks all the same) |
|
define heterogenous
|
the appearance of 2 or more parts to a substance.
can NOT be a pure substance. |
|
Tests for Gases:
A) Hydrogen- |
Tests for Gases:
Soft pop |
|
Tests for Gases:
B) Carbon Dioxide |
Tests for Gases:
both glowing and burning splints go immediately out. |
|
Tests for Gases:
C) Ammonia |
Tests for Gases:
distinctive odor, and very soluble in water. |
|
Tests for Gases:
D) Oxygen |
Tests for Gases:
Glowing splint bursts into flame |
|
Means of Physical Separation:
define: A) Distillation |
the separation of different liquids or gases by means of their different boiling points.
|
|
Means of Physical Separation:
define: B) Filtering |
the separation of different solids by means of their very DIFFERENT SOLUBILITIES. (SOLUBLE, INSOLUBLE)
|
|
Means of Physical Separation:
define: C) Fractional Crystallization |
the separation of different solids by means of their different SOLUBILITIES at DIFFERENT TEMPERATURES.
|
|
Means of Physical Separation:
define: D) Skimming |
the separation of different solids by means of their DIFFERENT DENSITIES.
|
|
Means of Physical Separation:
define: E) Paper Chromatography |
the separation of different pigments by means of their DIFFERENT SOLUBILITIES.
|