My cards Flashcards
(15 cards)
What is combustion?
Combustion is a rapid chemical reactions between a substance and oxygen involving the production of heat and light.
How do you read the Periodic table?
You start from the top ,reading from left to right .
How many groups are in the periodic table ?
There are 8 groups in the periodic table.
What is an element?
A substance composed of a single kind atom
How long did it take to make the periodic table?
About over a year.
Who made the periodic table?
Dmitri Mendeleev
What are the the horizontal rows called?
the horizontal rows are called periods
What are the vertical columns called?
the vertical columns are called groups
What dose the zig-zag line in the periodic table separate?
The zig-zag line in the periodictable separates the metals, on the left, from non-metals, on the right. Hydrogen is a non-metal but it is often put in the middle.
What is a mixture?
Two or more substance that are mixed togrther but are not chemicaly bonded
What is the smallest parasitical?
it is an atom
What is H20?
water
What is a general property of non-metals?
It has A High electromagnetism.
Do you know what the the equation of H20 (water)?
it is 2 hydrogen and 1 oxygen.
What is a Neutralisation?
Neutralisation is the reaction between an acid and a bas ero from a salt plus water
