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Elemental Chemistry For The Logic Stage -Final Exam Review Part 1
Test Description: Elemental Chemistry for the Logic Stage -Final Exam Review Part 1
Instructions: Answer all questions to get your test result.
1) 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
None of the above
D
Atoms have a nucleus composed of neutrons and electrons at the center, protons that fly around the nucleus in shells
2) How are the elements on the periodic table organized?
A
All of the above
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
The elements in the periodic table are arranged according to their color.
3) What are some typical characteristics of transition metals?
A
All of the above
B
Transition metals can conduct heat and electricity well.
C
Transition metals are shiny, hard and strong.
D
Transition metals have high melting points.
4) What are the main characteristics of poor metals and semimetals?
A
Poor metals are very soft, weak and melt easily.
B
None of the above
C
Poor metals and semimetals have high melting points.
D
Semimetals are elements that have identical properties to metals.
5) Which of the elements below are essential for life?
A
Oxygen
B
Nitrogen
C
All of the above
D
Carbon
6) 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
7) What causes crystals to form a definite shape?
A
Crystals form a definite shape because of the location of attachment.
B
Crystals form a definite shape because of the arrangement of their atoms or ions.
C
All of the above
D
Crystals form a definite shape because of the container they are in.
8) What creates the negative and positive ions in electrolysis?
A
The solution used in electrolysis splits a compound into positive and negative ions.
B
The type of battery used in electrolysis splits a compound into positive and negative ions.
C
All of the above
D
The electrical current used in electrolysis splits a compound into positive and negative ions.
9) 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 guesses the components of a substance.
C
None of the above
D
Qualitative analysis is when a scientist uses mathematical calculations to determine the components of a substance.
10) Ionic Bonding is...
A
A chemical bond between two atoms, in which each atom shares an electron.
B
A strong chemical bond that is caused by the attraction between two ions of opposite charges.
C
A chemical bond where positive metal ions create a lattice structure with freely moving electrons between them.
11) 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.
12) What is the difference between exothermic and endothermic reactions?
A
None of the above.
B
Endothermic reactions require heat; exothermic reactions release heat.
C
Endothermic reactions release heat; exothermic reactions require heat.
13) 14. What does the reactivity series tell us?
A
The reactivity series tells us that metals at the top of the series are very reactive.
B
The reactivity series tells us that the metals at the bottom of the series are the least reactive.
C
All of the above.
D
The reactivity series tells us how reactive certain metals are.
14) What happens to a substance when it is reduced?
A
None of the above.
B
When a substance is reduced, it gains oxygen or loses hydrogen in a chemical reaction.
C
When a substance is reduced, it loses oxygen or gains hydrogen in a chemical reaction.
15) What are enzymes and how does our body use them?
A
All of the above.
B
Enzymes assist in making proteins.
C
Enzymes are used by our body to break down our food.
D
Enzymes are naturally occurring catalysts.
16) What happens to a substance when it is oxidized?
A
When a substance is oxidized, it gains oxygen or loses hydrogen in a chemical reaction.
B
None of the above.
C
When a substance is oxidized, it loses oxygen or gains hydrogen in a chemical reaction.
17) What happens to acids in water?
A
Acids dissolve in water to form gas and a base.
B
When acids dissolve in water they yield positively charged hydrogen ions.
C
Acids cannot be dissolved in water, so nothing happens.
D
Acids and water do not mix, so the acid floats on top of the water.
18) 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
Strong bases and weak bases act identically.
C
None of the above.
D
Weak bases completely dissociate in water while strong bases do not.
19) What is pH?
A
pH measures the acidity or alkalinity of a solution.
B
pH is based on the number of hydrogen ions a solution contains.
C
All of the above.
D
pH stands for “power of hydrogen”.
20) How does yeast fermentation change in the presence of oxygen?
A
The products of yeast fermentation change in the presence or absence of oxygen.
B
Yeast fermentation does not change with or without oxygen.
C
None of the above
*select an answer for all questions
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