This document provides information about classifying elements on the periodic table as metals, nonmetals, or metalloids based on their properties. It discusses how metals are located on the left side of the periodic table and have properties like luster, malleability, ductility, high melting points, and conductivity. Nonmetals are on the right side and have properties like being dull, brittle, low density, and poor conductors. Metalloids are found along the zigzag line separating metals and nonmetals, having some properties of both.
1. Reassessment Requirements for
Elements Test
To view this slide show properly make sure to click “Slide Show”
and then “From Beginning”.
Go through each slide and CAREFULLY read each slide and
THINK about what you are reading.
Take notes of the important information on each page.
3. An element is a substance that is made from one
kind of atom only. It cannot be broken down into
simpler substances.
An element
An element
atom atom
4. Elements
Elements are PURE
SUBSANCES made of only one
type of atom.
So chemists do not have to
write out the whole name of an
element, they are represented
by symbols of one or two
letters.
*An element symbol only
contains one capital letter!
15. Properties of Nonmetals
Nonmetals occur to the right of the dark zig-zag on the
periodic table. Although Hydrogen is in family 1, it is also
a nonmetal. Many nonmetals are gases at room
temperature.
25. Properties of Metalloids
Silicon for example
has a shiny metallic
luster and is a
medium conductor
BUT it is brittle and
shatters when you
hit it with a hammer.
26. PRACTICE!
Read the description of the element and decide if it is a metal,
nonmetal, or metalloid by it’s properties. Click to check your
answer.
Hydrogen – clear, no luster, gas
Magnesium – shiny luster,
malleable, good conductor
Arsenic – shiny luster, brittle
Carbon – black, dull luster, brittle
Lead – very dense, shiny luster,
malleable
NONMETAL
METAL
METALLOID
27. Elements & Compounds
The elements,
alone or in
combinations,
make up our
bodies, our world,
our sun, and in
fact, the entire
universe.
28. Elements & Compounds
When elements
chemically combine to
make different
substance it is called a
compound.
Compounds are made
of two or more
elements joined.
Compound formulas
are written by
combining the element
symbols together.
29. A compound is a substance that is made from
more than one element.
atom atom
A compound made up of
2 different elements
A compound made up of
7 different elements
30. A compound can be broken down into the
elements that make it up.
A compound made up of 3
different elements
An element
An element
An element
31. PRACTICE!
On the next slide is a
COMPOUND or ELEMENT practice chart.
Read the information given in a row and
decide whether it is an element or a
compound.
Click to check your answer.
32. Material Made up of: Element or
compound
Water Hydrogen and Oxygen
Coal Carbon
Carbon dioxide Carbon and Oxygen
Oxygen Oxygen
Chalk Calcium, Carbon &
Oxygen
Wax Carbon & Hydrogen
Table salt Sodium & Chlorine
Helium Helium
Compound
Compound
Compound
Compound
Compound
Element
Element
Element
33. 33
PRACTICE READING COMPOUNDS!
Read the compound formula and see if you can figure out HOW
MANY ELEMENTS are in it and WHICH ELEMENTS they are.
Click to check your answer.
NaHCO₃
NaCl
C₆H₉O₆
4 – sodium,
hydrogen,
carbon,
oxygen
2 – sodium, chlorine
3 – carbon,
hydrogen, oxygen
