Chapter-1
Matter: Elements, Compounds, Mixtures (Homogeneous vs
Heterogeneous)
Definition of Matter
Matter is anything that has volume and mass. Matter can be broken down into
pure substances or mixtures.
In our society, most things are mixtures. Most things contain two or more things
put together. For example, the coffee you drink in the morning is most definitely a
mixture.
Types of Matter
A mixture or matter can be broadly classified as a mixture or a matter.
• A mixture contains two or more different things.
• A pure substance contains only one thing, such as a compound or element.
Homogeneous vs Heterogeneous Mixtures
In the mixture category, you have homogeneous and heterogeneous mixtures. A
homogeneous mixture composition is the same throughout. Write that down in
your notes. A heterogeneous mixture is one whose composition is not uniform
throughout. No matter where you look, you might find something different in a
hot fudge sundae.
A mixture can be separated into its different components depending on how you
treat it.
An atom is the smallest unit of matter that maintains its unique characteristics.
A compound is a pure substance made of two or more elements that are
chemically bonded together.
An element contains only one type of atom - for example, bullion grade gold is
99.99% pure gold with only one type of gold atom present.
, Atoms of different elements have unique characteristics - for example, titanium
atoms have unique properties compared to carbon atoms.
The periodic table categorizes elements based on their atomic structure and
properties.
Periodic Table of the Elements Video: Metal, Nonmetals and
Metalloids
The periodic table is a tabular arrangement of the chemical elements, organized
on the basis of their atomic number, electron configurations, and chemical
properties. It is broken down into periods and groups, which essentially are rows
and columns respectively.
Each element has its own square which tells you a lot of information about it,
including its symbol, atomic number and sometimes atomic mass. For instance,
nitrogen is represented by the capital block letter N. The second letter is always
lowercase. The vertical column, or group of elements, have similar chemical
properties. For example, group one is comprised of metals that behave similarly,
although not identically.
There are two systems for numbering the groups in the periodic table. The system
currently used in North America and Europe has the groups numbered from 1 to
18, whereas the standard International Union of Pure and Applied Chemistry
(IUPAC) system has the groups numbered from 1 to 18 but also includes the f-
block elements.
IUPAC is the International Union of Pure and Applied Chemistry, and we will be
using their rules for chemical formulas. We use parentheses and numbers, instead
of the a8, a, and a3a method. Chemical formulas show the type and number of
each element in a compound. For example, H2O2. The letters are on the same line,
and the numbers are subscripted to the right. If there is only one of a particular
element, the number one is assumed and not written out.
Matter: Elements, Compounds, Mixtures (Homogeneous vs
Heterogeneous)
Definition of Matter
Matter is anything that has volume and mass. Matter can be broken down into
pure substances or mixtures.
In our society, most things are mixtures. Most things contain two or more things
put together. For example, the coffee you drink in the morning is most definitely a
mixture.
Types of Matter
A mixture or matter can be broadly classified as a mixture or a matter.
• A mixture contains two or more different things.
• A pure substance contains only one thing, such as a compound or element.
Homogeneous vs Heterogeneous Mixtures
In the mixture category, you have homogeneous and heterogeneous mixtures. A
homogeneous mixture composition is the same throughout. Write that down in
your notes. A heterogeneous mixture is one whose composition is not uniform
throughout. No matter where you look, you might find something different in a
hot fudge sundae.
A mixture can be separated into its different components depending on how you
treat it.
An atom is the smallest unit of matter that maintains its unique characteristics.
A compound is a pure substance made of two or more elements that are
chemically bonded together.
An element contains only one type of atom - for example, bullion grade gold is
99.99% pure gold with only one type of gold atom present.
, Atoms of different elements have unique characteristics - for example, titanium
atoms have unique properties compared to carbon atoms.
The periodic table categorizes elements based on their atomic structure and
properties.
Periodic Table of the Elements Video: Metal, Nonmetals and
Metalloids
The periodic table is a tabular arrangement of the chemical elements, organized
on the basis of their atomic number, electron configurations, and chemical
properties. It is broken down into periods and groups, which essentially are rows
and columns respectively.
Each element has its own square which tells you a lot of information about it,
including its symbol, atomic number and sometimes atomic mass. For instance,
nitrogen is represented by the capital block letter N. The second letter is always
lowercase. The vertical column, or group of elements, have similar chemical
properties. For example, group one is comprised of metals that behave similarly,
although not identically.
There are two systems for numbering the groups in the periodic table. The system
currently used in North America and Europe has the groups numbered from 1 to
18, whereas the standard International Union of Pure and Applied Chemistry
(IUPAC) system has the groups numbered from 1 to 18 but also includes the f-
block elements.
IUPAC is the International Union of Pure and Applied Chemistry, and we will be
using their rules for chemical formulas. We use parentheses and numbers, instead
of the a8, a, and a3a method. Chemical formulas show the type and number of
each element in a compound. For example, H2O2. The letters are on the same line,
and the numbers are subscripted to the right. If there is only one of a particular
element, the number one is assumed and not written out.
