ATOMS Flashcards
WHAT ARE AOMS MADE UP OF?
subatomic particles;
neutrons
electrons
protons
WHAT IS A NEUTRON?
the mass off an atom
not charged
WHAT IS A PROTON?
the mass of an atom
positively charged
WHAT IS A MOLECULE?
a molecule is formed when two or more atoms join together chemically
WHAT IS AN ELECTRON?
a stable particle charged with negative electricity
WHAT S THE SAME ABOUT PROTONS AND NEUTRONS?
equal mass
WHAT IS MOSTLY IN AN ATOM?
empty space
HOW MUC LIGHTER ARE ELECTRONS?
200x
WHAT IS THE ATOMIC NUMBER?
number o electrons all together
WHAT IS THE MASS NUMBER?
amount of protons and neutrons
WHAT ARE ATOMS HELD TOGETHER BY?
chemical bonds
WHAT IS AN ION?
an atom or molecule with a negative electric charge due to the loss or gain of one or more electrons.
"hydrogen ions"
WHAT ARE ATOMS?
atoms are the basic building blocks of all materials
they cannot be divided
WHAT IS AN ELEMENT?
an element is a substance made up of only one type of atom
WHAT ARE COMPOUNDS?
when a molecule is made up of two or more different types of elements chemically combined
all compounds are non elements
