forms of the same element with different molecular or crystalline structures. Different forms of the same element that differ in physical and chemical properties.

Atoms with the same atomic number and different mass numbers.

the chemical reaction during which the original substances break apart and form new substances with new properties.

the arrangement of the particles in a substance changes, these changes are reversible.

the temperature at which a liquid changes into a gas when the vapor pressure of a liquid is equal to the external atmospheric pressure.

the temperature at which a solid changes into a liquid.

the temperature at which a liquid turns into a solid.

a bond between two non-metal atoms in which the two orbitals overlap and the atoms share an electron pair.

the bond between 2 metal atoms where there is a sea of delocalised electrons that are electrostatically attracted to positive atomic kernels.

electrons are transferred from one atom (usually a metal) to another (non-metal atom) where electrostatic forces hold the ions together in a crystal lattice.

the ability of an atom in a molecule to attract the bonding electron pair.

the amount of energy required to remove an electron from a neutral atom.

Pauli’s Exclusion Principle

an orbital can be occupied by a maximum of two paired electrons the electrons and the pair spin in opposite directions.

when an atom has several orbitals that have the same energy a single electron occupies each orbital before the electrons pair.

Help

Options

focusNode

Didn't know it?
click below

Knew it?
click below

Don't Know

Remaining cards (0)

Know

retry

shuffle

restart

0:00

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

chemistry

Term	Definition
Allotropes	forms of the same element with different molecular or crystalline structures. Different forms of the same element that differ in physical and chemical properties.
Isotopes	Atoms with the same atomic number and different mass numbers.
Chemical Change	the chemical reaction during which the original substances break apart and form new substances with new properties.
Physical Change	the arrangement of the particles in a substance changes, these changes are reversible.
Boiling Point	the temperature at which a liquid changes into a gas when the vapor pressure of a liquid is equal to the external atmospheric pressure.
Melting Point	the temperature at which a solid changes into a liquid.
Freezing point	the temperature at which a liquid turns into a solid.
Covalent Bond	a bond between two non-metal atoms in which the two orbitals overlap and the atoms share an electron pair.
Metallic bond	the bond between 2 metal atoms where there is a sea of delocalised electrons that are electrostatically attracted to positive atomic kernels.
Ionic Bond	electrons are transferred from one atom (usually a metal) to another (non-metal atom) where electrostatic forces hold the ions together in a crystal lattice.
Electronegativity	the ability of an atom in a molecule to attract the bonding electron pair.
Ionisation Energy	the amount of energy required to remove an electron from a neutral atom.
Pauli’s Exclusion Principle	an orbital can be occupied by a maximum of two paired electrons the electrons and the pair spin in opposite directions.
Hund’s Rule	when an atom has several orbitals that have the same energy a single electron occupies each orbital before the electrons pair.

Created by: user-2002402

"Know" box contains:
Time elapsed:
Retries: