EOC Review - Goal 6

1. A
2. B
3. C
4. D
Which pair of elements has the most physical and chemical properties in common?
1. Ge and Se
2. K and Kr
3. K and Kr
4. Ba and Bi
Which chemical equation represents a double replacement reaction?
Which best explains why water dissolves most salts?
1. Which best explains why water dissolves most salts?
2. Water is nonpolar, and salts form ions in solution.
3. Water has the same density as salts.
4. Water has a different density than salts.
1. endothermic
2. exothermic
3. decomposition
4. double replacement
1. A
2. B
3. C
4. D
1. A
2. B
3. C
4. D
Which situation provides the best evidence that a chemical reaction is taking place?
1. A metal strip bends when heated.
2. A solution freezes in the freezer.
3. Two solutions mixed in a beaker produce a solid.
4. A chemical completely dissolves in water and the temperature of the solution remains constant.
What is one problem with using nuclear fission as an energy source?
1. finding radioactive elements that have longer half-lives
2. finding ways of storing radioactive wastes
3. finding compounds to cool heated water
4. finding nonradioactive elements for nuclear reactors
Which element is an alkaline earth metal?
1. Li
2. O
3. Ne
4. Ca
1. A
2. B
3. C
4. D
Which type of bond is responsible for atoms of pure gold to remain bonded?
1. covalent
2. hydrogen
3. ionic
4. metallic
Which element has the same number of valence electrons as krypton (Kr)?
1. neon (Ne)
2. fluorine (F)
3. chlorine (Cl)
4. selenium (Se)
A teacher wants to demonstrate a chemical reaction to her students. Which activity would best demonstrate a chemical reaction?
1. placing a metal in an acid to create a gas
2. measuring the densities of liquid water and ice
3. melting a solid piece of aluminum
4. filling a balloon with helium gas
1. Solutions 1 and 3
2. Solutions 2 and 5
3. Solutions 3 and 6
4. Solutions 4 and 7
1. A
2. B
3. C
4. D
Which statement best describes the atoms of elements that form compounds by covalent bonding?
1. They share electrons between them.
2. They have a large difference in atomic mass.
3. They are in the same period in the periodic table.
4. They have a large difference in valence electron number.
1. decomposition
2. double replacement
3. single replacement
4. synthesis
Which best describes alpha particles?
1. They are attracted to negative electric fields
2. They are composed of beta particles.
3. They are able to penetrate concrete blocks.
4. They are products of chemical reactions.

EOC Review - Goal 6

Quiz