Periodic Table Flashcards
(32 cards)
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.
