Atoms
Compounds
Types of Bonds
Vocab
Graph reading
100
An atom has 29 protons, 29 electrons, and 35 neutrons. What is the mass number of the atom?
64
100
Which chemical formula represents magnesium phosphate?
A) MgPO4 B) Mg2PO4
C) Mg3(PO4)2 D) Mg2(PO4)3
C) Mg3(PO4)2
100
Which type of bond is responsible for atoms of pure gold to remain bonded?
Metallic
100
Atoms with an electrical charge are called a(n) _________.
Ion
100
This chart represents the melting points and boiling points of some substances. Which substance is a gas at 45OC?
Methane
200
How many protons and neutrons are there in an atom of 115B?
5 protons & 6 neutrons
200
What is the name for the compound MgCl2 and what is the type of compound?
Magnesium Chloride and is an ionic compound.
200
Please describe how the atoms of elements form compounds by covalent bonding.
They share electrons between them.
200
__________ bonds are formed between nonmetals.
Covalent
200
The graph shows temperature vs. energy data for a substance. What is the melting point of this substance?
20 degrees C
300
Which pair of elements has the most physical and chemical properties in common?
Ge and Se, K and Kr,
Al and Ga, Ba and Bi
Al and Ga
300
What is the correct name for the compound NaNO3?
Sodium Nitrate
300
During the reaction of an Ionic bond, what happens between the electrons of the elements involved?
Valence Electrons are given and taken
300
True or False:
A polyatomic ion is a covalently bonded group of atoms that has a positive or negative oxidation number as a group, and acts as one unit.
True
300
List the elements that could be represented by this "Lewis Dot Diagram?"
Group 7A: F, Cl, Br, I, At
400
What is the oxidation number for a Cl atom?
-1
400
What is the correct equation for Ammonium Phosphate?
A. (NH4)3PO4 B. NH3PO4
C. AM4(PO4) D. OH3CO3
A. (NH4)3PO4
400
Calcium Oxide is a (an) ___________ compound and the formula for Calcium Oxide is ______.
Ionic, CaO
400
What is the name of the force that holds atoms together in a unit?
Chemical Bond
400
The chart below shows the density of five gases. A gas has a volume of 4.52 L. If its mass is 8.05g, what is the identity of the gas?
Argon (m/v=D 8.05/4.52=1.78)
500
Looking at these elements, which pair, due to their electrical charges/oxidation #s, would most easily bond in an ionic bond?
K, Br, Ar, and C
K and Br
500
Which is the chemical formula for magnesium hydroxide?
A. Mg(OH)2 C. MgOH2
B. MgOH D. Mg2OH3
Mg(OH)2
500
Hydrogen Fluoride has a (an) ____________ bond and its chemical formula is ___________.
Covalent, HF
500
Name the two types of ions and tell me what they mean.
Cation: Positively charged
Anion: Negatively charged