Chem (6).txt

What does the atoms nucleus contain?

Protons = + charge

Neutron = no charge
What is the electron's charge?

Negative
What is the nature of electrical charges for pro. neu. and elec?

Opposite charges attract each other

Like charges repel each other

Opposite charges cancel each other so that when a protin and an electron, when paired, are charge-neutral
Protons and electrons must have the same what to be charge-neutral?

# of protons must equal the # of electrons
Illustration of an element, Be
- 4
- Be
- 9.01
- Beryllium
- 4=atomic # (Z)
- Be= chem. Symbol
- 9.01=atomic mass
- Beryllium=name
What is an element defined by?

Its # of PROTONS
Define the ion formula.

Ion charge = # of protons - # of electrons
T sor F. The # of protons has the same # of electrons.

True.

Author

xiongav

102719

Card Set

Chem (6).txt

Description

element.illustration & proton,neutron,elec. info.

Updated

2011-09-19T05:08:24Z