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- 1. Multiple Choice
Chemistry is a branch of science to study
(I) Interactions between matter
(II) Structure of matter
(III) Composition of matter
(IV) Properties of matter
I, II, and III
I, II, and IV
II, III, and IV
I, II, III, and IV
- 2. Multiple Choice
If you're determining the energy transfer when water boils what branch of chemistry are you working in?
Analytical chemistry
Physical chemistry
Organic chemistry
Biochemistry
- 3. Multiple Choice
________ chemistry is directed to a practical goal or application.
Pure chemistry
Analytical chemistry
Physical chemistry
Applied chemistry
- 4. Multiple Choice
The branch of chemistry which deals with the study of carbon compounds is ?
Biochemistry
Organic Chemistry
Inorganic Chemistry
Polymer Chemistry
Physical Chemistry
- 5. Multiple Choice
The study of the composition, structure, and properties of matter and the changes it undergoes.
Chemistry
Physics
Biology
Social Science
- 6. Multiple Choice
This water is changing from a liquid to a gas via _______.
vaporization
boiling
evaporation
condensation
- 7. Multiple ChoiceDuring the process of condensation, a gas is _______ down to a liquid.gettingsmellingheatingcooling
- 8. Multiple ChoiceIf the tops were removed from the cylinders, the following would happen:The solid would fly out of the containerThe liquid would fly out of the container.The gas would fly out of the container.They ALL would fly out of the container.
- 9. Multiple ChoiceThe freezing point of water in oCelsius and oFahrenheit is:100oC or 212oF0oC or 32oFWRONGWRONG
- 10. Multiple ChoiceThis image shows:Molecules in solid have the greatest amount of energy.Molecules in a liquid have the greatest amount of energy.Molecules in a gas have the greatest amount of energy.They have equal amounts of energy.
- 11. Multiple ChoiceWhen a solid changes into a liquid, it is called ......freezingsublimationmeltingboiling
- 12. Multiple ChoiceTRUE/FALSE: Boiling and evaporation are both types of vaporization.TRUEFALSE
- 13. Multiple Choice
The type of separation that would be appropriate if you needed to separate solid particles from a liquid is....
Distillation
Filtration
Separation funnel
Crystallization
- 14. Multiple Choice
Which are methods of separating dissolved particles from the liquid they are dissolved in?
Filtration, separation funnel, crystallization
Filtration, distillation, crystallization
Evaporation, filtration, crystallization
Evaporation, distillation, crystallization
- 15. Multiple Choice
What separation method is used to separate substances by their boiling point?
Filtration
Evaporation
Crystallization
Distillation
- 16. Multiple Choice
What is the physical property used to separate substances using the method of evaporation?
Boiling point
Melting point
Volatility
Particle size
- 17. Multiple Choice
In which mixture can you see all of the parts?
homogeneous
heterogeneous
- 18. Multiple Choice
In which mixture can you not see all of the parts?
homogeneous
heterogeneous
- 19. Multiple Choice
Trail mix
Solution
Mixture
- 20. Multiple Choice
The smallest particle of an element that still represents that element.
Nucleus
electron
proton
atom
- 21. Multiple Choice
What is a particle with one negative charge called?
electron
proton
quark
neutron
- 22. Multiple Choice
What is a particle with one positive charge called?
proton
electron
neutron
quark
- 23. Multiple Choice
What is the center of an atom called?
nucleus
electron cloud
proton center
photon center
- 24. Multiple ChoiceWhat is the number of protons that the element in this image contain?1471518
- 25. Multiple ChoiceWhen an atom loses a valence electron, it becomes a(n) _____________ ion.positivenegativeneutralpolyatomic
- 26. Multiple ChoiceHow many valence electrons in this structure?6547
- 27. Multiple ChoiceWhich subatomic particles contribute the most to the mass of an atom?Protons, Neutrons, ElectronsProtons onlyProtons and ElectronsProtons and Neutrons
- 28. Multiple ChoiceIn terms of matter, the atom is almost entirely filled with _____orbiting electronscharged protonsheavy neutronsempty space
- 29. Multiple ChoiceOf the three subatomic particles, which is the smallest and the lightest?protonsneutronselectronsThey are all equal.
- 30. Multiple ChoiceAn atom has 5 protons and 7 neutrons. What is the mass number of the atom?57212
- 31. Multiple ChoiceThe atomic number is always the number of ...neutrons.electrons.ions.protons.
- 32. Multiple Choice
The first energy level, or valence shell can hold up to how many electrons?
8
4
2
5
- 33. Multiple Choice
How many protons does an atom of Sodium (Na) have?
12
11
23
- 34. Multiple ChoiceWhat elements generally make an ionic bond?metal and nonmetal2 nonmetalsmetalnone of the above
- 35. Multiple ChoiceWhat elements generally make a covalent bond?metal and nonmetal2 nonmetalsmetalnone of the above
- 36. Multiple ChoiceIn chemical compounds, covalent bonds form whenthe electronegativity difference between two atoms is very large.electrons are completely transferred between two metals.pairs of electrons are shared between two nonmetal atoms.two nonmetal atoms are attracted to each other by opposite charges.
- 37. Multiple ChoicePredict the bond that will form between Be and F.IonicCovalent
- 38. Multiple ChoiceWhat happens when an atom loses an electron?It becomes Negatively ChargedIt remains neutral because the proton also leaves.It becomes Positively ChargedIt stays the same.
- 39. Multiple ChoiceIf an oxygen atom has 8 protons (+) and 10 electrons (-), what is it's charge?O10-O8+O2-O10+
- 40. Multiple Choice
1. Are the atoms more stable when they are bonded together or when they are apart?
Bonded Together
Apart
- 41. Multiple Choice
6. What usually forms the negative ion?
Nonmetals
Metal
None
- 42. Multiple Choice
10. What charges attract?
Opposite
Same
- 43. Multiple Choice
13. What elements generally make a covalent bond?
metal and nonmetal
2 or more nonmetals
metal
none of the above
- 44. Multiple Choice
16. What is the number of valence electrons for Calcium (Group 2)?
1
2
3
4
- 45. Multiple Choice
17. What is the number of valence electrons for Carbon (Group 14)?
1
2
3
4
- 46. Multiple Choice
20. If I was trying to determine if two atoms will bond, what would be helpful to know:
Valence electrons, found by group number
Whether the elements are metals or nonmetals
The electronegativity of the atoms
All of the above, all of which can be found on the Periodic Table
- 47. Multiple Choice
A positively or negatively charged particle.
covalent bond
ion
oxidation number
subscript
- 48. Multiple Choice
Metal atoms drift free from one side to another forming a ____________________________
sea of electrons
sea of ions
sea of molecules
sea of compounds
- 49. Multiple Choice
An ion that is negative is called a ____________________.
polar ion
nonpolar ion
anion
cation
- 50. Multiple Choice
An ion that is positively charged is called a ________________.
polar ion
cation
anion
positive ion
- 51. Multiple ChoiceHow many elements are in C6H12O6?1234
- 52. Multiple ChoiceHow many atoms of carbon (C) are in C6H12O6?361224
- 53. Multiple ChoiceElement or compound?
H2Oelementcompound - 54. Multiple ChoiceHow many atoms are there TOTAL in:
H2SO46573 - 55. Multiple ChoiceChemical reactions occur when _________ are broken and new bonds are formed.mixturesosteoclastsphysical bondschemical bonds
- 56. Multiple ChoiceBalance this equation...
HgO --> Hg + O2It is balanced2HgO --> Hg + O22HgO --> 2Hg + O2 - 57. Multiple ChoiceBalance this equation...
H2 + Cl2 --> HClIt is balanced3H2 + Cl2 --> 6H2ClH2 + Cl2 --> 2HCl - 58. Multiple Choice
Which are the reactants in the following reaction?
2Mg + O2 ---> 2MgO
Mg and O2
MgO
Mg and MgO
O2 and MgO
- 59. Multiple ChoiceHow many oxygens are in Al₂(SO₄)₃?412724
- 60. Multiple Choice
Which of the following is NOT an indication of a chemical reaction?
new gas formed
temperature change
new smell detected
two liquids form a mixture
- 61. Fill in the Blank
Is the equation balanced (yes or no)?
- 62. Multiple Choice
What state of matter is this substance?
solid
liquid
gas
aqueous
- 63. Multiple Choice
Identify the Reactants in this equation.
A
B
- 64. Multiple Choice
Identify the number in blue.
Product
Reactant
Coefficient
Subscript
- 65. Multiple Choice
In what state is this substance?
solid precipitate
dissolved in water
released as a gas
liquid
- 66. Multiple Choice
Is the following equation balanced?
4Fe + 3O2 ---> 2Fe2O3
YES
NO
- 67. Multiple Choice
Is the following equation balanced?
2C2H2 + 5O2 ---> 4CO2 + 2H2O
YES
NO
- 68. Multiple Choice
Is the following equation balanced?
NaHCO3 ---> Na2CO3 + H2O + CO2
YES
NO
- 69. Multiple Choice
Is the following reaction balanced?
2CH3OH + 3O2 ---> 2CO2 + 4H2O
YES
NO
- 70. Multiple Choice
Which of the following equations are correctly balanced?
12CO2 + H2O ---> C6H12O6 + O2
CO2 + H2O ---> 3C6H12O6 + O2
CO2 + 9H2O ---> C6H12O6 + O2
6CO2 + 6H2O ---> C6H12O6 + 6O2
- 71. Multiple Choice
Balanced this equation:
Sb2S3 + O2 ---> Sb + SO2
It is balanced.
Sb2S3 + O2 ---> 2Sb + SO2
Sb2S3 + 3O2 ---> 2Sb + 3SO2
3Sb2S3 + 3O2 ---> 2Sb + SO2
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