Module 3: Basic Concepts About Matter (Properties and Changes of Matter) (marj)

Property

A distinguishing characteristic of a substance that is

used in its identification and description.

1. Physical

2. Chemical

What are the two general types of property?

1. Intensive Physical Property

2. Extensive Physical Property

What are the 2 types of Physical Property?

Physical Property

A characteristic of a substance that can be observed without changing the basic identity of the substance.

Intensive Physical Property

it is also called intrinsic property,

does not depend on the size or amount of the same.

Chemical Property

A characteristic of a substance that describes the way the substance undergoes or resists change to form a new substance.

Extensive Physical Property

it is also called extrinsic property is those that can be affected by the size and amount of samples.

1. Physical Change

2. Chemical Change

What are the 2 types of changes in matter?

Chemical Change

It is a process in which a substance undergoes a change in chemical composition. It Involves conversion of the material(s) into one or more new substances.

Pure substance

a single kind of matter that cannot beseparated into other kinds of matter by any physical means.

Chemical Change

It is a process in which a substance undergoes a change in chemical composition. It Involves conversion of the material(s) into one or more new substances.

Mixture

a physical combination of two or more pure substances in which each substance retains its own chemical identity.

mixtures

have a variable composition

• Homogeneous Mixture

• Heterogeneous Mixture

What are the types of mixtures?

Heterogeneous Mixture

A type of mixture that contains visibly different phases (parts), each of which has different properties.

Element

a pure substance that cannot be broken down into simpler pure substances by chemical means such as a chemical reaction, an electric current, heat, or a beam of light.

Homogeneous Mixture

A type of mixture that contains only one visibly distinct phase (part), which has uniform properties throughout; solution

Compound

a pure substance that can be broken down into two or more simpler pure substances by chemical means.

118

How many are the known elements?

119

How many are the Ununennium?

atoms

the smallest unit of matter that retains all of the chemical properties of an element.

120

How many are the Unbinilium?

molecules

is a collection of two or more atoms that are securely bound together by attractive forces or by chemical bonds.

• The first is the tiny atomic nucleus, which is in the center of the atom and contains positively charged particles called protons and neutral, uncharged, particles called neutrons.

• The second, much larger, region of the atom is a “cloud” of electrons, negatively charged particles that orbit

what are the 2 regions of atom?

protons, electrons and neutrons

Most atoms contain all three of these types of subatomic particles which are?

chemical

refers to a compound or substance

formula

it refers to the symbolic expression

chemical formula

is a symbolic expression of a compound or substance.