Module 1 Flashcards
Mass of substance in a unit volume of that substance
Density (g/ml)
Higher the mass, the higher the density
The greater the volume, the smaller the density
Anything that occupies space and has mass
Matter
Matter= anything that occupies ____ and has ______
Space & Mass
Classification of Matter
- Element
- Compound
- Mixture
a. homogenous (solution)
b. heterogeneous
Simplest type of matter that is composed of 1 kind of atom
Element
Matter composed of 2 or more different elements that are chemically bonded together
Compound
Matter composed of elements or compounds that are physically mixed together
Mixture
Classifying matter… 4 questions
- Is the name of the material on the list of elements?
Yes - The material is an element.
No - The material is a compound, solution, or heterogeneous mixture.
- Are the names (or part of the names) of two elements present in the scientific name of the material?
Yes - The material is a compound.
No - The material is a solution or a heterogeneous mixture.
- Is only one substance, layer, or color seen when I look at the material?
Yes - The material is a solution.
No - The material is a heterogeneous mixture.
- Are two or more substances, layers, or colors seen when I look at the material?
Yes - The material is a heterogeneous mixture.
Al
Aluminum
Sb
Antimony
Ar
Argon
As
Arsenic
Ba
Barium
Be
Beryllium
Bi
Bismuth
B
Boron
Br
Bromine
Cd
Cadmium
Ca
Calcium
C
Carbon
Cl
Chlorine
Cr
Chromium
Co
Cobalt
Cu
Copper
F
Fluorine
Au
Gold
He
Helium
H
Hydrogen
I
Iodine
Fe
Iron
Pb
Lead
Li
Lithium
Mg
Magnesium
Mn
Manganese
Hg
Mercury
Ne
Neon
Ni
Nickle
N
Nitrogen
O
Oxygen
P
Phosphorus
Pt
Platinum
K
Potassium
Se
Selenium
Si
Silicon
Ag
Silver
Na
Sodium
Sr
Strontium
S
Sulfur
Sn
Tin
Ti
Titanium
W
Tungsten
U
Uranium
Zn
Zinc
An intimate combination of two or more elements in which the elements become attached to one another. [Chemically bonded]
Compound
Compounds can be recognized by their scientific name, which does not appear on the table of elements but contains the name (or part of the name) of two or more elements.
A combination of two or more elements or compounds, which appears (to the eye) to be one layer or material.
Homogeneous Mixture (Solution)
A combination of two or more elements or compounds, which appears (to the eye) without any manipulation to be more than one layer or material.
Heterogeneous Mixture
Matter can undergo two types of changes: ________ & ________
Physical Changes
Chemical Changes
A _____ change in matter is a change in the form, but not its chemical composition.
Physical Change
Changing the physical state of a substance without changing it’s composition…. physical changes can usually be reversed
Examples of Physical Changes
- Melting
- Freezing
- Dissolving
- Boiling
- Condensation
- Chopping
- Crushing
- Cutting
- Mixing
A ____ change is a change in the composition of matter
Chemical Change
Changes the identity of the orginal substance; Can’t reverse chemical changes
Examples of chemical changes
Burning
Rusting
Explosion
Baking
The basic unit of all matter is called ______
An atom
The center of the atom is called the _____ and contains two types of particles called ______ and ______.
Nucleus
Protons
Neutrons
Protons have a _____ charge
Positive
Neutrons have _____ charge
NO
Electrons have _____ charge
Negative
Four parts of an atom
- Nucleus
- Protons
- Neutrons
- Electrons
