2-1 Vocab Flashcards
(11 cards)
1
Q
Nucleus
A
Center of atom that contains the protons and neutrons.
2
Q
Electron
A
Negatively charged particle.
3
Q
Element
A
Pure substance that consists entirely of one type of atom.
4
Q
Isotope
A
Atoms of the same element that differ in the number of neutrons they contain.
5
Q
Compound
A
A substance formed by the chemical combination of two or more elements in definite proportions.
6
Q
Ionic Bond
A
Formed when one or more electrons are transferred from one atom to another.
7
Q
Ions
A
Positively and negatively charged atoms.
8
Q
Covalent Bond
A
Forms when electrons are shared between atoms.
9
Q
Molecule
A
The smallest unit of most compounds.
10
Q
van der Waals forces
A
Intermolecular forces of attraction.
11
Q
Atom
A
Basic unit of matter.
