MATTER AND ENERGY
What an everyday object is composed of, in the form
of a solid, liquid, or gas.
(A.K.A all things on Earth)
Example: Light bulb (solid)
The ability to do work, comes in different forms. Gravitational
Forms: Thermal (Heat) Chemical
Kinetic (motion) Electrical
Radiant (light) Nuclear
Periodic Table- a table of the chemical elements
arranged in order of atomic number.
Group/Family- the name given to the vertical (up
and down) columns of elements of the periodic
table. (17 GROUPS IN TOTAL)
Period/ Row- the name given to the horizontal
(across) rows of elements of the periodic table.
(7 ROWS IN TOTAL)
Nucleus- the center of an atom that contains the protons and neutrons.
Protons- positive charged subatomic particles found in the nucleus.
Neutrons- neutral charged subatomic particles found in the nucleus.
Electrons- negative charged subatomic particles found in the electron cloud surrounding the nucleus.
Luster- the way light reflects from the surface of a substance.
Malleability- the ability to be hammered into thin sheets.
Brittleness- the ability to break/shatter under pressure.
Conductivity- the ability to move heat or electricity from one place to another.
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Elements- a pure substance that can't be broken down chemically.
compound- a substance that consists of 2 or more elements combined chemically.
Ex: H20, water (2 hydrogen atoms and 1 oxygen atom)
Ex: Au, Gold (1 gold atom
The basic building block of matter that make up everyday object.
EVERYTHING IN THIS WORLD HAS ATOMS INCLUDING AIR
How to Identify an Element on the Periodic Table
Elements located to the left of the stair step (zig-zag ) line on the Periodic Table.
Ex: Al (aluminum)
95 metals in total
Elements located to the right of the stair step (zig-zag) line on the Periodic Table.
Ex: H (hydrogen)
17 Non-Metals in total
Elements located on the stair step (zig-zag) line on the Periodic Table.
Ex: B (boron)
6 Metalloids in total
ELEMENT IDENTITY/ REACTIVITY
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Element Identity- The atomic number gives the "identity" of
an element, it also determines where the element is located
on the Periodic Table.
Reactivity- the tendency of
an element to react with