Chemistry DR Comfort revision Flashcards
Where are the metals on the periodic table?
Right side
What is a mixture?
When two different substances are NOT chemically bonded
What is an atom?
The smallest component of an element
what is the molecule?
When two or more atoms are bonded together
What is a compound?
Two or more different atoms bonded together
What. Is an element?
Made up of one type of atom
What is a group on the periodic table
Ancolumn of elements in the periodic table
What is the formula
Away to represent a number of atoms in A chemical using symbols
What is a properties
Characteristics of a substance
What is a period in the periodic table
A horizontal row on the periodic table
What is reactivity
how easily a chemical reacts with another chemical
What is endothermic?
Energy in
Temperatures goes down
What is exothermic?
Energy out
Temperatures goes up
