Module 2 Physics Part 2

Question Number. 51. Protons have.
Option A. no charge.
Option B. positive charge.
Option C. negative charge.
Correct Answer is. positive charge.
Explanation. Protons are positively charged.


Question Number. 52. Producing a compound from commonly available materials is.
Option A. synthesis.
Option B. analysis.
Option C. bombardment.
Correct Answer is. synthesis.
Explanation. Making a compound is called synthesis, breaking it apart is called analysis.


Question Number. 53. A different number of nucleons in the nucleus of atoms would represent.
Option A. semiconductor.
Option B. isotopes.
Option C. isotones.
Correct Answer is. isotopes.
Explanation. An Isotope is an element with a 'wrong' number of neutrons.


Question Number. 54. Molecules of matter are in constant motion. The amount of vibration or motion is dependent on.
Option A. temperature.
Option B. volume.
Option C. pressure.
Correct Answer is. temperature.
Explanation. Temperature produces molecular motion.


Question Number. 55. When a chemical change takes place, the smallest particle indivisible in an element is called.
Option A. an atom.
Option B. an electron.
Option C. a neutron.
Correct Answer is. an atom.
Explanation. An atom is the smallest particle in an element. Particles smaller than that (neutrons, protons, electrons) do not define an element.


Question Number. 56. A nucleus of an atom consists of.
Option A. positively charged particles.
Option B. a nucleus and normally has no overall charge at all and so is neutral.
Option C. negatively charged particles.
Correct Answer is. positively charged particles.
Explanation. Protons are positive, neutrons are neutral.


Question Number. 57. A compound is a.
Option A. mixture of more than one element which are chemically bonded together.
Option B. solution (either liquid or solid) of elements or mixtures of elements to form a new material.
Option C. mixture of more than one element which are mixed together.
Correct Answer is. mixture of more than one element which are chemically bonded together.
Explanation. A compound is two or more elements chemically bonded.


Question Number. 58. A compound such as water can exist in how many states?.
Option A. 2.
Option B. 3.
Option C. 1.
Correct Answer is. 3.
Explanation. Solid, liquid, gas.


Question Number. 59. Select the correct statement from the following.
Option A. Temperature is the only factor which can affect the state in which matter exists.
Option B. Matter can only exist in one of three states.
Option C. As temperature rises a solid will always become a liquid and then a gas.
Correct Answer is. Matter can only exist in one of three states.
Explanation. Solid, liquid, gas. Pressure also affects the state in which matter exists.


Question Number. 60. Isotopes of an element have.
Option A. a different atomic number.
Option B. the same number of neutrons but a different number of protons.
Option C. the same number of protons but a different number of neutrons.
Correct Answer is. the same number of protons but a different number of neutrons.
Explanation. NIL.


Question Number. 61. Neutrons have.
Option A. no charge.
Option B. a positive charge.
Option C. a negative charge.
Correct Answer is. no charge.
Explanation. NIL.


Question Number. 62. Atomic MASS number is the number of.
Option A. protons.
Option B. protons and neutrons.
Option C. electrons.
Correct Answer is. protons and neutrons.
Explanation. Mass number is the total number of items in the nucleus (protons and neutrons).


Question Number. 63. How many electrons does an `S` orbital hold?.
Option A. 6.
Option B. 8.
Option C. 2.
Correct Answer is. 2.
Explanation. How many electrons does an `S` orbital hold?.


Question Number. 64. The number of electrons in a stable atom equals.
Option A. the number of neutrons in the nucleus.
Option B. the number of protons and neutrons in the nucleus.
Option C. the number of protons in the nucleus.
Correct Answer is. the number of protons in the nucleus.
Explanation. Electrons = Protons (to cancel the electrical charge).


Question Number. 65. An isotope of an element has.
Option A. the same atomic number but a different mass number.
Option B. the same mass number but a different atomic number.
Option C. a different mass and atomic number.
Correct Answer is. the same atomic number but a different mass number.
Explanation. NIL. http://en.wikipedia.org/wiki/Isotope


Question Number. 66. The mass number of an element is based on.
Option A. the total number of protons and neutrons in its nucleus.
Option B. the number of protons in its nucleus.
Option C. the number of neutrons in its nucleus.
Correct Answer is. the total number of protons and neutrons in its nucleus.
Explanation. NIL. http://chemistry.about.com/library/glossary/bldef57040.htm


Question Number. 67. The atomic weight of all atoms is related to.
Option A. Hydrogen.
Option B. Carbon.
Option C. Helium.
Correct Answer is. Carbon.
Explanation. NIL. http://education.yahoo.com/reference/dictionary/entry/atomic%20weight


Question Number. 68. The chemical bonding of two or more elements is called.
Option A. chemical analysis.
Option B. chemical synthesis.
Option C. chemical fusion.
Correct Answer is. chemical synthesis.
Explanation. NIL. http://en.wikipedia.org/wiki/Chemical_synthesis


Question Number. 69. Two or more elements that are chemically bonded together and have an even mass distribution form a.
Option A. mixture.
Option B. substance.
Option C. chemical compound.
Correct Answer is. chemical compound.
Explanation. When elements bond chemically, they make a compound.


Question Number. 70. An atom that gains one or more additional electrons is called.
Option A. a negative ion.
Option B. a positive ion.
Option C. an isotope.
Correct Answer is. a negative ion.
Explanation. Electrons are negatively charged, so additional electrons make an atom into a negative ion.


Question Number. 71. Ionic bonding involves.
Option A. electron sharing.
Option B. attraction to a free electron cloud.
Option C. electron transfer.
Correct Answer is. electron transfer.
Explanation. Ionic bonding is formed when electrons are transferred.


Question Number. 72. Non-metals form.
Option A. covalent bonds.
Option B. ionic bond.
Option C. metallic bonds.
Correct Answer is. covalent bonds.
Explanation. Non-metals usually form covalent bonds.


Question Number. 73. Brownian Movement describes.
Option A. Brownian Movement describes.
Option B. the attraction of electrons.
Option C. the motion of molecules.
Correct Answer is. the motion of molecules.
Explanation. NIL. http://www.hyperdictionary.com/dictionary/Brownian+movement


Question Number. 74. Elements on the extreme right of the periodic table are.
Option A. Metals.
Option B. Non-metals.
Option C. Transition metals.
Correct Answer is. Non-metals.
Explanation. NIL. http://science.howstuffworks.com/atom8.htm


Question Number. 75. Oxygen, atomic number 8 is.
Option A. trivalent.
Option B. univalent.
Option C. bivalent.
Correct Answer is. bivalent.
Explanation. NIL. http://www.sil.org/linguistics/GlossaryOfLinguisticTerms/WhatIsValency.htm


Question Number. 76. The atomic number of the atom of an element is based on.
Option A. the number of neutrons in to nucleus.
Option B. the number of protons in its nucleus.
Option C. the total number of protons and neutrons in its nucleus.
Correct Answer is. the number of protons in its nucleus.
Explanation. NIL. http://www.hyperdictionary.com/dictionary/atomic+number


Question Number. 77. Water is.
Option A. an element.
Option B. a mixture.
Option C. a compound.
Correct Answer is. a compound.
Explanation. NIL.


Question Number. 78. The Mass of a Proton is approximately.
Option A. equal to the mass of an electron.
Option B. equal to the relative mass of a molecule.
Option C. 2000 times greater than the mass of an electron.
Correct Answer is. 2000 times greater than the mass of an electron.
Explanation. NIL.


Question Number. 79. Noble gases are _______ and _______ and have a full outer shell of electrons.
Option A. fluorine and neon.
Option B. sulphur and neon.
Option C. helium, neon, argon.
Correct Answer is. helium, neon, argon.
Explanation. NIL. http://www.chemicalelements.com/groups/noblegases.html


Question Number. 80. If a hydrogen atom has 2 neutrons and 1 proton what kind of water would you get?. 
Option A. Fresh water.
Option B. Heavy water.
Option C. Salt water.
Correct Answer is. Heavy water.
Explanation. Heavy water - water containing a substantial proportion of deuterium atoms, used in nuclear reactors.


Question Number. 81. A majority of an atom's mass is in the.
Option A. compound.
Option B. isotope.
Option C. nucleus.
Correct Answer is. nucleus.
Explanation. NIL. http://en.wikipedia.org/wiki/Atom

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