Natural Science Final
- 1.
What makes an element distinct?
- A.
The number of protons
- B.
The number of neutrons
- C.
The number of electrons
- D.
The total mass of all particles
Correct Answer
A. The number of protons -
- 2.
The reason a granite block is mostly empty space is because the atons in granite are
- A.
In perpetual motion
- B.
Mostly empty space themselves
- C.
Held together by electrical forces
- D.
Not as close together as they could be
- E.
Invisible
Correct Answer
B. Mostly empty space themselves -
- 3.
Which if the following are electically neutral?
- A.
Proton
- B.
Neutron
- C.
Electron
- D.
All of these
- E.
None of these
Correct Answer
B. Neutron -
- 4.
In an electrically neutral atom, the number of protons in the nucleus is balanced by an equal number of
- A.
Neutrons
- B.
Quarks
- C.
Orbital electrons
- D.
All of these
- E.
None of these
Correct Answer
C. Orbital electrons -
- 5.
The chemical properties of matter come mostly from its
- A.
Protons
- B.
Electrons
- C.
Neutrons
- D.
Protons plus neutrons
Correct Answer
B. Electrons -
- 6.
The nucleus of an electrically neutral iron atom contains 26 protons. How many electrons does this iron atom have?
- A.
52
- B.
26
- C.
24
- D.
None
Correct Answer
B. 26 -
- 7.
Strontium, Sr (number 38), is especially dangerous to humans because it tends to accumulate in calcium-dependent bone marrow tissues (calcium Ca, number 20). This fact relates to the organization of the periodic table in that strontium and calcium are both
- A.
Metals
- B.
In Group 2 of the periodic table
- C.
Made of relatively large atoms
- D.
Soluble in water
Correct Answer
B. In Group 2 of the periodic table -
- 8.
How many electrons are in the otermost shell of potassium (K, atomic number 19)
- A.
1
- B.
19
- C.
8
- D.
0
Correct Answer
A. 1 -
- 9.
An atom with an imbalance of protons to electrons is
- A.
A lepton
- B.
A beta particle
- C.
An ion
- D.
An isotope
- E.
None of these
Correct Answer
C. An ion -
- 10.
The atomic number of an element is the same as the number or its
- A.
Protons
- B.
Neutrons
- C.
Nucleons
- D.
None of these
Correct Answer
A. Protons -
- 11.
The atomic mass number of an element is the same as the number of its
- A.
Protons
- B.
Neutrons
- C.
Nucleons
- D.
None of these
Correct Answer
C. Nucleons -
- 12.
Different isotopes of an element have different numbers of
- A.
Protons
- B.
Neutrinos
- C.
Photons
- D.
Neutrons
- E.
None of these
Correct Answer
D. Neutrons -
- 13.
The source of the earth's natural heat is
- A.
Molten-hot lava
- B.
Pressure on the earth's core
- C.
Radioactive decay in the earth's core
- D.
Solar energy in the form of fossil fuels
Correct Answer
C. Radioactive decay in the earth's core -
- 14.
Solid matter is mostly empty space. The reason solids don't fall through one another is because
- A.
Atoms are constantly vibrating, even at absolute zero
- B.
Of nuclear forces
- C.
Of gravitational forces
- D.
Of electrical forces
- E.
None of these
Correct Answer
D. Of electrical forces -
- 15.
The volume of matter comes mostly from its
- A.
Protons
- B.
Electrons
- C.
Neutrons
- D.
Nucleus
Correct Answer
B. Electrons -
- 16.
Compared to the mass of a hydrogen atom, the mass of an oxygen atom is
- A.
8 times greater
- B.
12 times greater
- C.
16 times greater
- D.
Much more than 16 times greater
Correct Answer
C. 16 times greater -
- 17.
If two protons were removed from an oxygen nucleus, the result would be
- A.
Nitrogen
- B.
Carbon
- C.
Helium
- D.
Neon
- E.
None of these
Correct Answer
B. Carbon -
- 18.
Growth in a living body is best considered an example of a
- A.
Physical change
- B.
Chemical change because it eventually comes to a halt with the same person in tact
- C.
Chemical change because chemical reactions are involved
- D.
Chemical change because of the irreversibility
- E.
Two of the above are correct
Correct Answer
E. Two of the above are correct -
- 19.
Chemical and physical changes are similar in that they both involve
- A.
Energy
- B.
Changes in physical
- C.
The formation of fundamentally new material
- D.
Two of the above are correct
- E.
There are no ways in which chemical and physical changes are similar
Correct Answer
D. Two of the above are correct -
- 20.
How is a physical change different from a chemical change?
- A.
The physical properties of a substance are not altered during a chemical change
- B.
A physical change involves changes in chemical properties
- C.
The chemical identity of a substance is altered during a physical change
- D.
The chemical identity of a substance is not altered during a physical change
Correct Answer
D. The chemical identity of a substance is not altered during a physical change -
- 21.
Classify the following changes as physical or chemical: wood burns to ashes; water begins to boil; grass grows; a rock is crushed to powder
- A.
Chemical; physical; chemical; chemical
- B.
Chemical; physical; physical; physical
- C.
Physical; physical; chemical; physical
- D.
Chemical; physical; chemical; physical
Correct Answer
D. Chemical; physical; chemical; physical -
- 22.
In an electrically neutral atom, the number of protons in the nucleus is balanced by an equal number of
- A.
Neutrons
- B.
Quarks
- C.
Orbital electrons
- D.
All of these
- E.
None of these
Correct Answer
C. Orbital electrons -
- 23.
The chemical properties of matter come mostly from its
- A.
Protons
- B.
Electrons
- C.
Neutrons
- D.
Protons plus neutrons
Correct Answer
B. Electrons -
- 24.
The nucleus of an electrically neutral iron atom contains 26 protons. How many electrons does this atom have?
- A.
52
- B.
26
- C.
24
- D.
None
Correct Answer
B. 26 -
- 25.
The components of a mixture are most efficiently separated from one another based upon their
- A.
Similarities in chemical properties
- B.
Similarities in physical properties
- C.
Differences in chemical properties
- D.
Differences in physical properties
Correct Answer
D. Differences in physical properties -
- 26.
Classify each of the following as element, compund, or mixture: sugar, brass, table salt, oxygen, steam
- A.
Mixture, element, compound, element, element
- B.
Compound, mixture, compound, element, compound
- C.
Mixture, compound, mixture, element, compound
- D.
Compound, element, compound, element, compound
Correct Answer
B. Compound, mixture, compound, element, compound -
- 27.
What elements tend to form covalent bonds?
- A.
Elements from the right side of the PT
- B.
Any 2 elements
- C.
Elements from the left side of the PT
- D.
None of these
Correct Answer
A. Elements from the right side of the PT -
- 28.
If aluminum ions have a 3+ charge and oxygen ions have a 2- charge, the compound is
- A.
Al3O2
- B.
Al2O3
- C.
AlO2
- D.
Al2O
Correct Answer
B. Al2O3 -
- 29.
A molecule is
- A.
The scientific name for an atom
- B.
A group of covalently bonded atoms
- C.
A group of oppositely charged ions
- D.
An object too small to be seen without a magnifying glass
Correct Answer
B. A group of covalently bonded atoms -
- 30.
How many electrons are shared in a single covalent bond?
- A.
1
- B.
2
- C.
3
- D.
4
Correct Answer
B. 2 -
- 31.
What type of bonding would you expect between a calcium atom and a chlorine atom?
- A.
Ionic
- B.
Nonpolar covalent
- C.
Polar convalent
- D.
Metallic
Correct Answer
A. Ionic -
- 32.
The atoms of a polar covalent bond
- A.
Are always of the same element
- B.
Must include a metal and a nonmetal
- C.
Must be of different elements
- D.
Two of the above are correct
Correct Answer
C. Must be of different elements -
- 33.
In terms of periodic table, is there a gradual or an abrupt change between ionic and covalent bonds?
- A.
An abrupt change that occurs across the metalliods
- B.
Actually, any element of the PT can form a covalent bond
- C.
There is a gradual change: the farther apart, the more ionic
- D.
Whether an element forms ionic or covalent has to do with nuclear charge, not position on the PT
Correct Answer
C. There is a gradual change: the farther apart, the more ionic -
- 34.
Unlike attractions between molecules, chemical bonds
- A.
Cannot be broken, whereas molecular attractions can
- B.
Do not involve electric charges
- C.
Are much stronger
- D.
Are always present and stable between molecules
Correct Answer
C. Are much stronger -
- 35.
"Soft water" is water that
- A.
Is difficult to obtain
- B.
Contains many dissolved gases
- C.
Contains a relatively large amount of calcium and magnesium ions
- D.
None of these
Correct Answer
C. Contains a relatively large amount of calcium and magnesium ions -
- 36.
The dfference between endothermic and exothermic reactions is that endothermic reactions
- A.
Absorb energy but exothermic reactions release energy
- B.
Require a continual supply of energy but exothermic reactions don't
- C.
Have energy as a product and exothermic reactions have energy as a reactant
- D.
Occur best at low temperatures while exothermic reactions occur best at high temperatures
Correct Answer
A. Absorb energy but exothermic reactions release energy -
- 37.
What mass of an oxygen atom in atomic mass units?
- A.
12 amu
- B.
16 amu
- C.
18 amu
- D.
32 amu
Correct Answer
B. 16 amu -
- 38.
Gases are so much easier to squeeze into smaller volumes than liquids or solids because
- A.
They are so much lighter
- B.
Their atoms or molecules are already moving at high speeds
- C.
There is so much space between the submicroscopic particles
- D.
There are always warmer than liquids or solids
Correct Answer
C. There is so much space between the submicroscopic particles -
- 39.
During a chemical reaction
- A.
Old atoms transform into new ones
- B.
Old atoms disappear to be replaced by new ones
- C.
Old atoms stick around merely switching partners
- D.
None of the above
Correct Answer
C. Old atoms stick around merely switching partners -
- 40.
What chemical change occurs when a wax candle burns?
- A.
The wax near the flame melts
- B.
The molten wax is pulled upwards through the wick
- C.
The wax within the wick is heated to about 600 C
- D.
The heated wax molecules combine with oxygen molecules
Correct Answer
D. The heated wax molecules combine with oxygen molecules -
- 41.
What determines what kind of atom an atom is?
- A.
The number of protons
- B.
The number or electrons
- C.
The number of neutrons
- D.
The number or protons plus neutrons in the nucleus
Correct Answer
A. The number of protons -
- 42.
What determines the weight of an atom?
- A.
The number of protons in the nucleus
- B.
The number of electrons
- C.
The number of nucleons in the nucleons
- D.
The number of protons plus neutrons in the nucleus
Correct Answer
D. The number of protons plus neutrons in the nucleus -
- 43.
When atoms combine they:
- A.
Rearrange electrons
- B.
Redistribute their protons
- C.
Form solids
- D.
Exist as solutions
Correct Answer
A. Rearrange electrons -
- 44.
Each box on the periodic table has 3 characters. The top character is a number that represents:
- A.
The number of protons
- B.
The name of the element
- C.
The number of neutrons
- D.
The number of neutrons plus protons
Correct Answer
A. The number of protons -
- 45.
If magnesium ions have a 2+ charge and oxygen ions have a 2- charge, the compound is:
- A.
Mg4O2
- B.
Mg2O2
- C.
Mg2O4
- D.
MgO
Correct Answer
D. MgO -
- 46.
How many electrons are shared in a single covalent bond?
- A.
1
- B.
8
- C.
2
- D.
4
Correct Answer
C. 2 -
- 47.
Sodium (Na) is in group 1 on the PT. This means:
- A.
Sodium atoms occur naturally in pairs
- B.
Sodium has only one electron
- C.
Sodium atoms have only one valence electron
- D.
Sodium atoms combine only with group V11 atoms
Correct Answer
C. Sodium atoms have only one valence electron -
- 48.
In terms of periodic table, is there a gradual or an abrupt change etween ionic and covalent bonds?
- A.
An abrupt
- B.
Any element of the PT can form a covalent bond
- C.
Gradual change, the further apart the more ionic
- D.
Whether an element forms ionic or covalent has to do with nuclear charge, not position on the PT
Correct Answer
C. Gradual change, the further apart the more ionic -
- 49.
Which of the following statements best characterizes a gaseous phase on the molecular level?
- A.
Molecules in a gas are distributed randomly over relatively large volumes because they are moving fast enough to overcome molecular interactions.
- B.
Gas molecules are light enough to float away from one another
- C.
Gases don't consist of molecules. They are separated into individual atoms and that is why they are in a gaseous phase
Correct Answer
A. Molecules in a gas are distributed randomly over relatively large volumes because they are moving fast enough to overcome molecular interactions. -
- 50.
Which is a physical change?
- A.
Digesting
- B.
Burning
- C.
Rusting
- D.
Evaporating
Correct Answer
D. Evaporating -
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Feb 18, 2013Quiz Edited by
ProProfs Editorial Team -
May 06, 2012Quiz Created by
Kissmeimlo
- Aeronautics Quizzes
- Aerospace Quizzes
- Astrology Quizzes
- Atom Quizzes
- Biochemistry Quizzes
- Biomechanics Quizzes
- Biostatistics Quizzes
- Biotechnology Quizzes
- Branches Of Science Quizzes
- Chemistry Quizzes
- Cytology Quizzes
- Easy Science Quizzes
- Ecology Quizzes
- Electrical Quizzes
- Embryology Quizzes
- Endocrinology Quizzes
- Engineering Quizzes
- Environmental Science Quizzes
- Epidemiology Quizzes
- Experiment Quizzes
- Forestry Quizzes
- Fossil Quizzes
- Gas Quizzes
- General Science Quizzes
- Genetics Quizzes
- Histology Quizzes
- Human Biology Quizzes
- Integrated Science Quizzes
- Invention Quizzes
- Library Science Quizzes
- Lighting Quizzes
- Liquid Quizzes
- Marine Biology Quizzes
- Microbiology Quizzes
- Molecular Biology Quizzes
- Nature Quizzes
- Neuroscience Quizzes
- Nuclear Science Quizzes
- Oceanography Quizzes
- Physics Quizzes
- Psychology Quizzes
- Science And Technology Quizzes
- Science Glossary Quizzes
- Science Knowledge Quizzes
- Science Practice Quizzes
- Scientific Method Quizzes
- Scientific Notation Quizzes
- Soil Science Quizzes
- Solar System Quizzes
- Solid Quizzes
- Zoology Quizzes
Back to top