bonding

Cards (20)

what is an atom? 
The basic unit of matter.
what is atomic structure?
Protons, neutrons, electrons
what are protons? 
Subatomic particles with a positive charge.
what are electrons? 
Subatomic particles with a negative charge.
what are neutrons? 
Subatomic particles with no charge.
what is the mass of a proton?
1
what is the mass of a neutron?
-1
what is the mass of an electron?
very small
what is an atomic number?
The number of protons in an atom.
what is an element?
A pure substance made of only one kind of atom and that cannot be broken down into simpler substances.
what is atomic mass?
the sum of the mass (number) of the neutrons and protons of an element.
what is the mass number?
The total number of protons and neutrons in an atom's nucleus.
what is an ion?
An ion is an atom or molecule that has gained or lost electrons, resulting in a positive or negative charge.
what is a molecule? 
A group of atoms bonded together.
what is a compound? 
A compound is a substance made up of two or more different elements chemically bonded together.
what is a mixture?
A combination of two or more substances that are not chemically bonded.
what is an isotope? 
An isotope is a variant of an element that has the same number of protons but a different number of neutrons in its nucleus.
3 properties of an ionic compound?
high melting & boiling point, high solubility, can conduct electricity when molten or in a solution
3 properties of a covalent compound?
low melting & boiling point, insoluble, cannot conduct electricity
name 3 properties of metallic compounds?
high melting & boiling point, conducts heat & electricity well, malleable

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