Biology Ch2

the basic unit of matter

• nucleus

• atom

• ion

• molecule

the center of the atom

• nucleus

• molecule

• electron

• neutron

negatively charger particles

• electron

• proton

• neutron

substance that consists entirely of one type of atom

• atom

• molecule

• elements

• ions

one of several forms of a single element , which contains the same number of protons but different number of neutrons

• electrons

• ions

• isotopes

• molecules

substance formed by the chemical combination of two or more elements

• compounds

• molecules

• ions

when one of more electrons are transferred from one atom to another

• ionic bond

• covalent bond

• hydrogen bond

• Van der waals

How do covalent bonds form?

• Donating & receiving valence e- between atoms.
• Opposite slight charges attract each other between compounds.
• Scientists are still not sure how they form.
• Sharing valence e- between atoms.

Tags

NGSS.HS-PS1-2

Smallest unit of a compound that displays the properties of the compound

• atom
• molecule
• covalent bond
• ionic bond

Tags

NGSS.MS-PS1-1

A slight attraction between oppositely charged regions of nearby molecules

• hydrogen bond

• van Dear Waals forces

• covalent bond

• link