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- 1. Multiple ChoiceWhat electrical charge does a proton have?+10-1+2
- 2. Multiple Choice
What mass does a neutron have?
1 amu
0 amu
-1 amu
+2 amu
- 3. Multiple Choice
Complete the missing label on the diagram.NeutronCentreNucleusSub atomic particle - 4. Multiple ChoiceIn order for an atom to be neutral what has to be true?The atom has more protons than neutronsThe atom has more neutrons than protonsThe atom has the same number of protons and neutronsThe atom has the same number of protons and electrons
- 5. Multiple ChoiceWhere is most of the mass in an atom located?in the nucleusin the protonsin the neutronsin the electrons
- 6. Multiple ChoiceWhat is atomic number?Number of protons in an atomsNumber of neutrons in an atomMass of an atomCharge on an atom
- 7. Multiple ChoiceThe total number of protons and neutrons in an atom is called the...Atomic numberProton numberMass numberWeight number
- 8. Multiple Choice
How many electrons does a sodium atom have?
23
11
12
34
- 9. Multiple Choice
How many protons does an aluminum atom have?
27
14
40
13
- 10. Multiple ChoiceAtoms of the same element must always have the same number of _________electronsneutronsisotopesprotons
- 11. Multiple Choice
The _________ of an element equals the number of protons in an atom of that element.
mass number
atomic weight
atomic number
isotopes
- 12. Multiple ChoiceHow is the number of neutrons in the nucleus of an atom calculated?Add the number of e- and p+ togetherSubtract the number of e- from p+Subtract the number of p+ from the mass numberAdd the mass number to the number of e-
- 13. Multiple Choice
The cloud-like space that electrons travel around:
nucleus
shell
neutrons
Oort cloud
- 14. Multiple Choice
The number of total elements in the periodic table: Man Made elements: Naturally occurring elements: (in that order)
118, 92, 26
118, 26, 92
108, 26, 82
108, 82, 26
- 15. Multiple Choice
________ rays produce fluorescence on a zinc sulphide screen.
Anode rays
Cathode Rays
- 16. Multiple Choice
Identify the subatomic particles from the clues given:
1. Mass does not change. It is 1/1837 of a hydrogen element (or 9.108 * 10^-28), irrespective of the element.
2. Negative charge of 1.602 * 10^-19 coloumbs
3. Radius smaller than 1* 10^-15m
Electron
Proton
Neutron
Quark
- 17. Multiple Choice
From the clues, identify the subatomic particle:
1. Mass same as that of a hydrogen atom.
2. Named by Goldstein, who also discovered this subatomic particle.
3. Unit positive charge of 1.602 * 10^-10 coloumbs.
Electron
Proton
Neutron
Quark
- 18. Multiple Choice
The Rutherford Model of the atom is comparable to the:
Plum pudding
Solar system
- 19. Multiple Choice
Which of these are nucleons? Choose all that apply
Protons
Electrons
Neutrons
- 20. Multiple Choice
Chlorine has an atomic mass of 35.5. This is because:
It has half a neutron extra in its nucleus.
We take the weighted average of the naturally occuring isotopes of chlorine in nature and arrive at the notional A (mass no.)
Chlorine has an atomic mass of 35, not 35.5. This is on account of one extra neutron in the nucleus.
- 21. Multiple Choice
Why do ionic bonds have high melting and boiling points?
Ionic bonds are held together by large electrostatic forces of attraction. Marge amounts of heat energy is needed to break down these bonds.
In the solid state, the ions are fixed at their lattice points and cannot move.
Since water is a polar covalent compound, it reduces the electrostatic forces of attraction.
- 22. Multiple Choice
Covalent bonds happen only between non metals. This is because:
Non metals have a valency of 4 and above and are not in a position to donate electrons. So, they must share
Metals are too arrogant and sure of themselves to share.
Non Metals have soft electrostatic bonds making it easier to share valence electrons.
- 23. Multiple Choice
Which of the following describes covalent bonds?
Bonds form because of opposite charges
electrons are shared to fill outer electron shells
Electrons are transferred between atoms
Covalent bonds are magical
- 24. Multiple ChoiceWhat molecule is this?COCO2C2OC2O2
- 25. Multiple ChoiceHow many electrons should Nitrogen have around its Lewis dot model?1345
- 26. Multiple ChoiceWhat is ionization energy?Energy needed to destroy an atomEnergy required to remove an electronEnergy needed to split an electronEnergy required to add an electron
- 27. Multiple Choice
For representative elements (Groups 1A - 8A), the number of valence electrons is equal to
the group number
the period number
the atomic number
the group number minus 10
- 28. Multiple Choice
For metals (groups 1-3), its easier to _____ electrons to have a full outer shell.
gain
lose
share
- 29. Multiple Choice
For nonmetals (grousp 5-7), its easier to _____ electrons to have a full outer shell.
gain
lose
share
- 30. Multiple ChoiceIonic bonds form between metals and ____.metalloidsmetalsnonmetals
- 31. Multiple ChoiceWhat is the formula of Sodium oxide?Na2ONaO2Na2O2Na2O
- 32. Multiple ChoiceAn ionic bond is the attraction between:oppositely charged ionssimilarly charged ionsneutral ionsneutral atoms
- 33. Multiple ChoicePhosphorous trichloridePCl3P3ClP3Cl3PCL
- 34. Multiple ChoiceElectronegativity is...how good an atom is at attracting electronsthe ability of an atom to lose electronsthe energy required to remove an electron from a specific atomhow easy it is to make friends.
- 35. Multiple ChoiceChlorine and Fluorine are both very electronegative, as they are both missing a single electron from their valence energy level. Why is Fluorine more electronegative than Chlorine?Fluorine has less energy levels.Chlorine has more electrons in its outer shellFluorine has more protons.None of these
- 36. Multiple Choice
Identify all statements that are true about this diagram.
This is the orbital structure diagram of carbon tetrachloride molecule formation
This is the orbital structure diagram of hydrochloric acid molecule formation
This is an ionic bond
This is a covalent bond
- 37. Multiple Choice
Atoms reach their lowest energy by achieving a balance between ___
energy and electronegativity
attractive and repulsive forces
strong and weak nuclear forces
positive and negative charges
- 38. Multiple Choice
The strength with which an atom holds shared electrons is called its ___
electrostatic force
ionization energy
bond length
electronegativity
- 39. Multiple Choice
When shared unequally, electrons spend most of their time around the atom with ___
the lower electronegativity
the higher electronegativity
more charisma
less charisma
- 40. Multiple Choice
The separation of charges, due to unequal sharing of electrons, is called ___
polarity
opposition
antagonism
negativism
- 41. Multiple Choice
What type of bond is formed when shared electrons are attracted to one atom more than the other?
an ionic bond
a polar covalent bond
a nonpolar covalent bond
a hydrogen bond
- 42. Multiple Choice
When electrons are evenly shared between two identical atoms, what type of bond forms?
a hydrogen bond
a nonpolar covalent bond
a polar covalent bond
an ionic bond
- 43. Multiple Choice
Which elements tend to form covalent bonds?
metals
metals and non-metals
nonmetals and sometimes metalloids
metalloids
- 44. Multiple Choice
Metals have loosely-held outer electrons, so they're constantly dropping them and becoming ___
negative ions
positive ions
anions
onions
- 45. Multiple Choice
What type of bond is formed between a positive ion and a negative ion?
an ionic bond
a polar covalent bond
a nonpolar covalent bond
a treasury bond
- 46. Multiple ChoiceWhich element can combine with oxygen to form a molecular compound?FeMgCNe
- 47. Multiple ChoiceWhich molecule contains a triple covalent bond between its atoms?N2O2F2H2
- 48. Multiple ChoiceWhich bond is most polar?H-FH-ClH-BrH-I
- 49. Multiple ChoiceWhich notations represent different isotopes of the element sodium?32S and 34SS2- and S6+Na+ and Na022Na and 23Na
- 50. Multiple Choice
Coordinates bonds are also called ..
ionic bonds
covalent bonds
dative bonds
metallic bonds
- 51. Multiple Choice
What is the meaning of Dative Bond?
a covalent bond between two atoms where one of the atoms provides both electrons that form the bond.
a covalent bond between two atoms where both of the atoms provides both electrons that form the bond.
same with an ionic bond
not exist
- 52. Multiple Choice
Is dative bond an ionic bond or a type of covalent bond?
A type of Ionic bond
A type of covalent bond
- 53. Fill in the Blank
The atom which contributes the electron pair is called the __________, while the atom which accepts it is called the ___________.
- 54. Multiple ChoiceWhat do these isotopes of carbon all have in common?neutrons & mass numberatomic number and neutronsatomic number and electronsprotons, atomic number, and mass number
- 55. Multiple ChoiceHow many neutrons does the isotope of lithium have?8345
- 56. Multiple ChoiceIn a correctly written symbol what would be located in the "A" position?number of neutronsatomic numbernumber of electronsmass number
- 57. Multiple ChoiceWhat quantities vary between isotopes of an element?protons, electrons, and atomic massprotons, electrons, and atomic numberneutrons and electronsneutrons and atomic mass
- 58. Multiple ChoiceFour isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant.204206207208
- 59. Multiple ChoiceTwo isotopes of carbon are carbon-12 and carbon-14. These isotopes differ from one another by two protons.truefalse
- 60. Multiple Choice
Isotopes have the same Z but different A. This means that their _______ properties are the same but their ___________ properties differ.
chemical, physical
physical, chemical
- 61. Multiple Choice
All of these elements have naturally occurring isotopes except:
hydrogen
Carbon
Oxygen
Chlorine
Sodium
- Answer choicesTagsAnswer choicesTags