Show:
Electrons Rule The Show
Iconic Ions
Covalent Confidence
In The Mix
Mixed or Bonded
100
Electrons in the outermost shell of any atom give that atom its chemical properties, including its ability to form chemical bonds. These important outermost electrons are called.....
What are Valence Electrons
100
Two oppositely charged ions are attracted to each other by an electric force, which holds them together. This electric force of attraction between two oppositely charged ions is called.....
An Ionic Bond
100
A ________ __________ is a chemical bond in which atoms are held together by their mutual attraction for two or more electrons they share.
What is a Covalent Bond.
100
In a_____________ all components are in the same phase. Good examples are the atmosphere, salt water and white gold.
What is a SOLUTION.
100
Why doesn't a neon atom tend to lose or gain electrons?
As a Noble gas it has a full outer valence shell and is chemically stable (Octet Rule).
200
When the number of protons in an atomic nucleus equals the number of surrounding electrons in atoms the charges balance and the atom is electrically neutral. If one or more valence electrons are lost or gained the balance is upset. The atom then has a net electric charge. Any atoms that has a net electric charge is called...
What is an ION.
200
A positive ion is called a __________ and a negative ion is called an __________.
What is a CATION and ANION.
200
How many electrons are shared in a triple covalent bond?
What is six electrons.
200
An _____________is a homogeneous mixture in which the different components are in different phases, such as solids in liquids or liquids in gases. In a ____________ the mixing is so thorough that the different phases cannot be readily distinguished. Good examples are Blood, Milk, and Clouds...
What is a SUSPENSION.
200
A _____________ and a ___________ compound are different names for any group of atoms held together by covalent bonds.
What is MOLECULE and COVALENT COMPOUND
300
Paired valence electrons are relatively stable. In other words, they usually do not form chemical bonds with other atoms. For this reason, electron pairs in a Lewis structure are called....
What are NONBONDING PAIRS.
300
What is the electrical charge on the calcium ion in the compound calcium chloride, CaCl2
What is +2.
300
What force holds two atoms together in a covalent bond?
The electromagnetic force.
300
In describing solutions, it is usual to call the component that is present in the large amount the _____________. The other component is called the ______________. The process of mixing the two together is called____________.
What is the SOLVENT, SOLUTE, and DISSOLVING.
300
Magnesium ions carry a 2+ charge, and chloride ions carry a 1- charge. What is the chemical formula for the ionic compound magnesium chloride?
What is MgCl2
400
What is the chemical formula for the ionic compound magnesium oxide? Explain your answer.
MgO Mg is a group 2 element, so the atom must lose 2 electrons O is a group 6A element, so it must gain two electrons. The charges balance is a one-to-one ratio.
400
Iodine: 1. Atomic Symbol is ______. 2. Total number of electrons is______. 3. Number of Valence electrons is ______. 4. Type of ion formed ________.
1. I 2. 53 3. 7 4. I -1
400
How many Nonbonding pairs are there in an oxygen atom? How many unpaired valence electrons in an oxygen atom?
1. 2 NONBONDING PAIRS 2. 2 UNPAIRED VALENCE ELECTRONS
400
When a solvent can not accept anymore solute, what type of solution is formed?
What is a SATURATED SOLUTION
400
The _____________ effect is light scattered by particles in a colloid or particles in a fine suspension? What is a colloid?
Tyndall Effect A colloid is a substance microscopically dispersed evenly throughout another substance. Examples are gels.
500
When you look at the electron dot structure of any Atom, you immediately know two important things about that element. What are those two things?
1. The number of Valence Electrons. 2. How many Valence Electrons are paired
500
In an IONIC BOND: 1. Atoms will _________ one or more electrons to form another bond. 2. Each atom is left with a _________outer shell 3. An ionic bond forms between a ________ ion with a positive charge of a nonmetal ion with a negative charge.
1. TRANSFER 2. COMPLETE 3. METAL
500
In a COVALENT BOND: 1. Atoms ___________ one or more electrons with each other to form the bond. 2. Each atom is left with a __________ outer shell. 3. Forms between two _____________.
1. SHARE 2. COMPLETE 3. NONMETALS
500
What is the solvent in the gaseous solution we call air?
What is Nitrogen, because it is the component present in the greatest quantity
500
The components of mixtures can be separated from one another by taking advantage of differences in the components ____________ properties. What are two methods of separating components of a mixture.
What is PHYSICAL PROPERTIES. FILTRATION and DISTILLATION