Elements and compounds Flashcards
1
Q
element
A
a pure substance that cannot be broken down into any simpler substances.
2
Q
compound
A
any substance that is formed by the chemical combination of two or more elements and acts like a single substance
3
Q
atom
A
the smallest unit of an element that retains the properties of that element.
4
Q
proton
A
a particle in the nucleus of an atom that carries one unite of positive electric charge
5
Q
neutron
A
a particle in the nucleus of a atom that has no net electric charge
6
Q
electron
A
a particle in the space outside of the nucleus of an atom that carries one unit of negative electric charge
7
Q
nucleus
A
a dense structure inside the cell
8
Q
molecule
A
a particle that contains more than one atom joined together
