Final fun1

This symbol indicates a _______.

• neutron

• proton

• electron

Which of the following is described as the basic unit of matter?

• Element
• Atom
• Molecule
• Compound

What charge does an electron have?

• Negative
• Positive
• Neutral
• Contrated

In this chemical equation, the elements in red are the_______.

• Products

• Reactants

• Subscripts

• Coefficients

What is the atomic mass of this atom?

• 1

• 3

• 4

• 7

What is a valence electron?

• an electron that is found in the outermost orbital of an atom. 
• an electron found in the innermost orbital of an atom.
• an electron found in the middle orbital.

An ionic bond forms when

• valence electrons are shared back and forth (move between) two atoms.

• a sea of mobile electrons surround the cations and they then become negativly charged

• valence electrons are transferred from one atom to another, forming charged ions that are then pulled together by attraction between opposite charges

• none of the above

Is this image an example of covalent bonding?

• Yes
• No

Using the information provided, determine how many electrons the a Boron atom contains.

• 2.5

• 5

• 6

• 10.81

When gaseous water molecules lose __________, they become a liquid.

• energy

• heat

• motion

• all of the above