Ch 2 quiz 1

In the picture, what is the atomic number for Sodium?

• 11
• 22.9
• Na
• none of the above

What two particles are inside the nucleus of an atom?

• Protons and Neutrons
• Electrons and Protons
• Electrons and Neutrons
• all of them

These have a negative charge and fly around the outside of an atom?

• Electron 
• Proton
• Neurton
• Atoms

These are the number of electrons on the outermost energy level.

• atom

• electron

• valence electron

• valence configuration

When electrons are shared in a covalent bond, but not equally, the molecule is said to be

• ionic
• polar
• nonpolar

• cation

Polar molecules can stick to each other through 

• ionic bonding
• hydrogen bonding
• covalent bonding

Isotopes of an element have a different number of...

• Protons

• Neutrons

• Electrons

• Mass

What elements generally make an ionic bond ?

• Metal and nonmetal

• 2 or more nonmetals

• 2 or more metals

• 2 elements

An ionic bond is formed when

• Valence electrons are shared.

• Valence electrons surround the cations.

• Valence electrons are transferred between atoms.

• Valence electrons are completely transferred between two metals.

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.