Chemistry: Basic chemistry review 1

The atomic number of an element specifies the number of...
1. protons in atoms of the element.
2. neutrons in atoms of the element.
3. electrons in the outer orbit of atoms of the element.
4. of isotopes that exist for the element.
5. none of the other answers are corrrect.
The atomic mass of an element indicates the number of ...
1. protons and neutrons in atoms of the element.
2. proton in atoms of the element.
3. neutrons in atoms of the element.
4. electrons in atoms of the element.
5. isotopes that exist for the element.
Isotopes are atoms of the same element with different numbers of ...
1. neutrons.
2. protons.
3. electrons.
4. atomic mass.
5. none of the other answers are correct.
Elements with similar chemical properties are arranged in the periodic table in ...
1. vertical groups or families.
2. horizontal groups or families.
3. vertical periods.
4. horizontal periods.
5. None of the other answers are correct
On the periodic table ...
1. metals are located on the left side, non-metals on the right side.
2. metals are located on the right side, non-metals on the left side.
3. metals are located on the top, non-metals on the bottom.
4. metals are located on the bottom, non-metals on the top.
5. metals and non-metals have no special location on the periodic table
The smallest unit of matter that has the chemical propertes of any given element is ...
1. the atom.
2. a molecule.
3. an isotope.
4. the proton.
5. the electron.
A molecule of ammonium hydroxide is composed of...
1. 7 atoms and three different elements.
2. 7 elements and three different atoms.
3. 4 atoms and three different elemnts.
4. 4 elements and three different atoms.
5. None of the other answers are correct.
When magnesium metal reacts with hydrochloric acid (HCl) to produce magnesium chloride and hydrogen gas,...
1. this is a single discplacement reaction.
2. this is a double displacement reaction.
3. this is a decomposition reaction.
4. this is a synthesis reaction.
5. this is a conversion reaction.
When hydrogen gas reacts with oxygen gas to produce water, a great deal of energy is released. Therefore this is ...
1. an exothermic synthesis reaction.
2. an exothermic decomposition reaction.
3. an endothermic synthesis reaction.
4. an endothermic decomposition reaction.
5. None of the other answers are correct.
As the temperature of a solution increases, ...
1. the solubility of solids increases and the solubility of gases decrease.
2. the solubility of solids decreases and the solubility of gases increases.
3. the solubility of both solids and gases increase.
4. the solubility of both solids and gases decrease.
5. there is no effect on the solubility of solids and gases.
The element Mercury is ...
1. a liquid metal at room temperature
2. a liquid non-metal at room temperature
3. a solid metal at room temperature.
4. a solid non-metal at room temperature.
5. is a Noble gas at room temperature.
The transition metals ...
1. include iron and copper
2. include sodium and calcium
3. are found in groups one and two of the periodic table.
4. are found in groups seven and eight of the periodic table.
5. are poor conductors of electricity and heat.