The atoms in a compound are held together by _________.
What is chemical bonds
100
bond formed between positively charged metal ions and electrons
What is metallic bond
100
Which part of an ionic compound should be written first?
What is cation
100
Most organic compounds contain the elements____and___.
What is carbon and hydrogen
100
Crystals of salt, called sodium chloride, are...
What is made of a network of ions.
200
A compound's ______________ shows which atoms or ions it is made up of.
What is chemical formula
200
bond formed between oppositely charged ions
What is ionic bond
200
What does a Roman numeral in parenthesis after a cation indicate?
What is the ion's charge
200
Which compound is an alkane?
CH2O
C6H14
C3H4
What is C6H14
200
The chemical formula for calcium chloride is...
What is CaCl2
300
____________ formulas show how atoms are arranged in a compound.
What is structural.
300
bond formed between atoms that share electrons
What is covalent bond
300
What kind of formula tells the actual numbers of atoms in one molecule of a compound?
What is molecular formula?
300
The 20 different organic molecules that combine to form proteins are called____.
What is amino acids
300
What is the name of the following covalent compound?
P2O5
What is diphosphorus pentoxide.
400
Network solids usually have _____ melting and boiling points.
What is high.
400
What kind of bonds does Ca(OH)2 have?
What is ionic and covalent.
400
What is the charge of the cadmium cation in cadmium cyanide, Cd(CN)2. Explain your reasoning
What is Total charge must be 0. Each cyanide ion has a charge of 1-. The cadmium ion's charge must be 2+ to cancel the 2*1- charge from the cyanide ions.
400
Genetic makeup is determined by ____, a polymer with a double helix structure.
What is DNA
400
What is hydroxyl group?
What is OH-
500
The bond angle between Hydrogen and Oxygen is...
What is 104.45 degrees
500
Does N2O4 contain ionic or covalent bonds? Why?
What is it has covalent bonds because both elements involved are nonmetals.
500
Name the following compound...CrCl2
What is chromium(II)chloride
500
How many hydrogens are connected to... C=C-C-C?
What is 8 hydrogen atoms
500
Describe the relationship between bond length and bond strength?
What is The longer the bond, the weaker the bond. The Shorter the bond, the stronger the bond....