Elemental Chemistry For The Logic Stage -Final Exam Review Part 1 Question Preview (ID: 42847)


Elemental Chemistry For The Logic Stage -Final Exam Review Part 1. TEACHERS: click here for quick copy question ID numbers.

Covalent Bonding is..
a) A chemical bond between two atoms, in which each atom shares an electron.
b) A chemical bond where positive metal ions create a lattice structure with freely moving electrons between them. C.
c) A strong chemical bond that is caused by the attraction between two ions of opposite charges.
d)

Ionic Bonding is...
a) A chemical bond between two atoms, in which each atom shares an electron.
b) A chemical bond where positive metal ions create a lattice structure with freely moving electrons between them.
c) A strong chemical bond that is caused by the attraction between two ions of opposite charges.
d)

What creates the negative and positive ions in electrolysis?
a) The type of battery used in electrolysis splits a compound into positive and negative ions.
b) The electrical current used in electrolysis splits a compound into positive and negative ions.
c) The solution used in electrolysis splits a compound into positive and negative ions.
d) All of the above

What is qualitative analysis?
a) Qualitative analysis is when a scientist uses a variety of methods to determine the components of a substance.
b) Qualitative analysis is when a scientist uses mathematical calculations to determine the components of a substance.
c) Qualitative analysis is when a scientist guesses the components of a substance.
d) None of the above

What causes crystals to form a definite shape?
a) Crystals form a definite shape because of the container they are in.
b) Crystals form a definite shape because of the arrangement of their atoms or ions.
c) Crystals form a definite shape because of the location of attachment.
d) All of the above

Which of the elements below are essential for life?
a) Nitrogen
b) Oxygen
c) Carbon
d) All of the above

What is the difference between mass and volume?
a) Mass is the measure of the amount of space that matter occupies, while volume is the amount of matter in a substance.
b) Mass is the measure of the amount of matter in a substance, while volume is the amount of space that the matter occupies.
c) None of the above
d)

How are the elements on the periodic table organized?
a) The elements in the periodic table are arranged according to their color.
b) The elements in the periodic table are arranged in alphabetical order.
c) The elements in the periodic table are arranged according to their atomic number.
d) All of the above

What are some typical characteristics of transition metals?
a) Transition metals have high melting points.
b) Transition metals are shiny, hard and strong.
c) Transition metals can conduct heat and electricity well.
d) All of the above

What are the main characteristics of poor metals and semimetals?
a) Poor metals are very soft, weak and melt easily.
b) Poor metals and semimetals have high melting points.
c) Semimetals are elements that have identical properties to metals.
d) None of the above

What is the basic structure of an atom?
a) Atoms have a nucleus composed of electrons and protons at the center, neutrons that fly around the nucleus in shells
b) Atoms have a nucleus composed of neutrons and protons at the center, electrons that fly around the nucleus in shells
c) Atoms have a nucleus composed of neutrons and electrons at the center, protons that fly around the nucleus in shells
d) None of the above

What is the difference between exothermic and endothermic reactions?
a) Endothermic reactions release heat; exothermic reactions require heat.
b) Endothermic reactions require heat; exothermic reactions release heat.
c) None of the above.
d)

14. What does the reactivity series tell us?
a) The reactivity series tells us how reactive certain metals are.
b) The reactivity series tells us that metals at the top of the series are very reactive.
c) The reactivity series tells us that the metals at the bottom of the series are the least reactive.
d) All of the above.

What happens to a substance when it is reduced?
a) When a substance is reduced, it loses oxygen or gains hydrogen in a chemical reaction.
b) When a substance is reduced, it gains oxygen or loses hydrogen in a chemical reaction.
c) None of the above.
d)

What are enzymes and how does our body use them?
a) Enzymes are naturally occurring catalysts.
b) Enzymes are used by our body to break down our food.
c) Enzymes assist in making proteins.
d) All of the above.

What happens to a substance when it is oxidized?
a) When a substance is oxidized, it loses oxygen or gains hydrogen in a chemical reaction.
b) When a substance is oxidized, it gains oxygen or loses hydrogen in a chemical reaction.
c) None of the above.
d)

What happens to acids in water?
a) Acids cannot be dissolved in water, so nothing happens.
b) Acids and water do not mix, so the acid floats on top of the water.
c) When acids dissolve in water they yield positively charged hydrogen ions.
d) Acids dissolve in water to form gas and a base.

What is the difference between a strong base and a weak base?
a) Strong bases completely dissociate in water while weak bases do not.
b) Weak bases completely dissociate in water while strong bases do not.
c) Strong bases and weak bases act identically.
d) None of the above.

What is pH?
a) pH stands for “power of hydrogen”.
b) pH measures the acidity or alkalinity of a solution.
c) pH is based on the number of hydrogen ions a solution contains.
d) All of the above.

How does yeast fermentation change in the presence of oxygen?
a) Yeast fermentation does not change with or without oxygen.
b) The products of yeast fermentation change in the presence or absence of oxygen.
c) None of the above
d)

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