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Which of the following is not true about atoms? A. Atoms are the basic unit of life. B. Atoms are made up of subatomic particles such as anion, cation, and ion. C. Atoms cannot be created nor destroyed.
B
What are valence electrons? A. the number of electrons gained by an atom B. the electrons in the innermost energy level of an atom C. the electrons in the outermost energy level of an atom
C
What is the easiest way to find the number of valence electrons?
By checking out the elements' group number in the periodic table.
Which of the following can form multiple bonds? A. sodium and chlorine B. two hydrogen atoms C. 1 carbon atom & 2 oxygen atoms
A
What do you call the horizontal rows in the periodic table?
Period number / series
What type of bond is chlorine gas?
nonpolar covalent
Draw 1 atomic structure and explain your drawing.
Predict if calcium and oxygen will form ionic, polar covalent, or nonpolar covalent bond. What is the basis of your prediction?
Ionic bonding. Calcium is a metal and oxygen is a nonmetal.
It is a diagram that describes the chemical bonding between atoms in a molecule.
Lewis Electron Dot Structure
It is the measure of the ability of an atom in a molecule to attract electrons to itself.
Electronegativity
Give 5 properties of metals.
malleable, ductile, good conductor of heat and electricity, sonorous, high melting and boiling point
