Periodic Table Flashcards
Define an atom.
The smallest part of an element that can exist.
Define a bond.
An attraction between atoms
or molecules that enables the formation of chemical compounds.
Define a chemical formula.
A series of chemical symbols showing the number of atoms of each element in a compound.
Define a chemical reaction.
A process that involves rearrangement of atoms to produce new substances.
Define a chemical symbol.
A letter or series of letters used to represent an element, e.g. C for carbon, Na for sodium.
What is a compound
A substance made up of two or more different elements chemically bonded together.
Define an element.
A substance made of only one type of atom.
Define a group
A column of the periodic table that contains elements with similar chemical properties.
Define a metal
An element or substance which is typically shiny, malleable and ductile. It typically conducts heat and electricity well.
Define a mixture.
A substance consisting of two or more substances not chemically combined together.
Define a non-metal
An element or substance that is not a metal.
Define a period.
A row on the periodic table.
Define a trend.
The general direction in which a set of data changes, i.e. increasing or decreasing.
Define boiling point.
The temperature at which a substance changes from liquid to gas (evaporates). It is also the temperature at which a substance changes from gas to liquid (condenses).
Define the word brittle
Hard but easily broken.
Define conduction
The transfer of heat or electricity through a material.
Define the word density.
The mass of a substance divided by its volume. The more dense a substance is, the heavier it feels for its size.
Define displacement reaction
A reaction in which a more reactive substance displaces a less reactive substance.
Defone the word ductile.
Can be stretched into wires.
Define dull.
Not shiny.
Define a magnetic material
A material that can be attracted by a magnet or made into a magnet.
Define malleable.
Can be hammered or pressed into different shapes.
Define a melting point.
The temperature at which a substance changes from solid to liquid (melts).
It is also the temperature at which a substance changes from liquid to solid (freezes).
Define reactivity.
measure of how easily a substance reacts with another substance.
Define shiny
A surface which reflects light.
Define the word sonorous
Makes a ringing sound when dropped.
Define unreactive
A substance which does not react chemically.
Do the melting points increase or decrase in Group 1?
Decrease
Do the melting points increase or decrase in Group 7?
Increase
Do the melting points increase or decrase in Group 0?
Increase
Does the reactivity increase or decrase in Group 1?
Increase
Does the reactivity increase or decrase in Group 7?
Decrease
