Bonding and Compounds
The Chemistry of Life
Chemical Reactions
Nuclear Changes
Solutions
100
Describe how electrons behave in a covalent bond
Two atoms share valence electrons between them, satisfying the octet rule
100
What is organic chemistry the study of?
Organic chemistry is the study of of carbon-containing compounds
100
What is a chemical reaction?
A process that changes a substance into one or more different substances - chemical bonds are broken and atoms are rearranged
100
What is nuclear fusion?
Two small nuclei combine to form a larger nuclei
100
What is a homogeneous mixture?
A homogeneous mixture is a solution - it has a uniform appearance due to the even distribution of solute in it. There are many examples.
200
Describe how electrons behave in an ionic bond
The atom with a greater electronegativity takes electrons with the atom with less, satisfying the octet rule for both
200
Name and describe the three shapes of organic compounds
Straight chains, branched chains, and rings
200
Name three evidences of a chemical reaction
Formation of a precipitate, bubbles, release of energy, temperature change, color change, odor, burning, composition change
200
What is nuclear fission?
A large nuclei splits into smaller nuclei
200
Make a sentence with the words solute, solvent, and solution to describe how they relate to each other
Solute is dissolved into solvent to produce a solution
300
What is the name of a compound made of Lithium and Chlorine?
Lithium Chloride
300
What is an isomer?
A molecule that has the same chemical formula, but different structure, of another
300
Why is it important that the number and kind of atoms in a chemical equation are balanced?
Imbalance of an equation suggests that atoms have been created or destroyed, violating the law of conservation of matter
300
What is released from the nucleus during beta decay?
A high energy electron
300
What is a solution called if there is less that the maximum amount of solute in it?
The solution is dilute
400
What is it called when a molecule has an uneven distribution of electric charge?
Polarity; a molecule with uneven electric charge is a polar molecule
400
What are proteins made up of?
Amino acids
400
What kind of reaction is this?
Fe + CuSO4 → FeSO4 + Cu
Displacement reaction
400
Name one way that radiation can be helpful, and one way it can be harmful
Answers will vary
400
Name one way to separate a mixture
Evaporation, magnetism, filtering or sifting, distillation
500
Determine the chemical formula for calcium sulfide.
K2S
500
Draw pentyne
500
Balance this chemical equation:
Al + Fe2O3 --> Fe + Al2O3
2Al + Fe2O3 --> 2Fe + Al2O3
500
Francium undergoes alpha decay. What element does it become?
Astatine
500
What is the molarity of a solution with 2 moles of solute dissolved into a 20 mL solution?
0.1 M
OR
0.1 mol/mL