Mar 22, 2013 - Give the atomic mass and atomic numbers for each of the following ... Predict if the following compounds have covalent or ionic bonds: ...
Standards Review #1 March 22, 2013 1. Give the atomic mass and atomic numbers for each of the following elements. Also, give the number of protons, neutrons and electrons. ELEMENT Chlorine Gold Silver Nobelium Thorium
ATOMIC NUMBER
ATOMIC MASS
PROTONS
NEUTRONS
ELECTRONS
3. Predict if the following compounds have covalent or ionic bonds: a) NaI b) CO2 c) CaBr2
d) N2 e) Ca3P2 f) CH4
4. Of the following pairs of elements, circle the element with the greatest ionization energy. a) Lithium and chlorine b) Sodium and Francium c) Iron and Fluorine
e) Oxygen and Tin f) Potassium and Bromine g) Fluorine and Francium
5. Of the following pairs of elements, circle the element with the greatest electronegativity. a) Sodium and Chlorine b) Lithium and Francium c) Iron and Bromine
e) Sulfur and Tin f) Sodium and Bromine g) Chlorine and Francium
6. Where are each of the following groups found: a) alkali metals
b) alkaline earth metals c) halogens
d) noble gases
7. Do the electron-dot symbols for the atoms below: a) Molybdenum e) Californium
b) Polonium f) Osmium
c) Europium
d) Antimony
8. Where are electrons, protons and neutrons found? 9. How does an electrons distance from the nucleus relate to its potential energy? 10. List 3 elements that will have the same number of valance electrons as chlorine,
.
11. Determine if the each of the following elements is a metal, nonmetal or a metalloid. a. Chlorine b. Francium c. Aluminum
e. Tin f. Argon g. Boron
12. Some of the molecules found in the human body are NH2CH2COOH (glycine), C6H12O6 (glucose), and CH3(CH2)16COOH (stearic acid). Are the bonds they form ionic or covalent. 13. Define standard temperature and pressure (STP). 14. One mole of any gas occupies _________ liters at STP.
15. What is the equivalent of 423 kelvin in degrees Celsius? 16. How many moles of HNO3 are needed to prepare 5.0 liters of a 2.0 M solution of HNO3? 17. The specific heat of copper is about 0.4 joules/gram ºC. How much heat is needed to change the temperature of a 50gram sample of copper from 10.0 ºC to 70.0 ºC?(1200j) 18. Complete the following nuclear equations. a. 82 Pb2 He 208
4
b. 91 Pa 2 He ___ 89 Ra 234
___
c. 92U 0 n ___ 93Np d. 56 Ba 1 235
1
236
139
___
0
4
237
e) 60 Nd 1 H 61Pm ___ 145
1
145
19. A gas has a pressure of 263torr. Its volume is changed from 9.22L to 3.37L and its tempfrom 25oC to 304oC. What is the new pressure?(1.39x103torr)
erature is changed
20. A gas has a volume of 6.91L. Its pressure is changed from 1.20x103torr to 5.42x103torr and it temperature is changed from 86oC to 147oC. What is the new volume?(1.79L) 21. A gas STP has a volume of 5.33L. It volume is changed to 2.69L and its temperature is changed to 161 oC. What is the new pressure in torr?(2390torr) 22. You mix one mole of HCl with one mole of NaOH. The resulting solution will have a pH of _______. 23. A substance has a pH of 9. Is this an acid, a base, or neutral? Explain. 24. A substance has a pH of 2. Is this an acid, a base, or neutral? Explain. 25. Calculate the molarity of a solution that has 0.39moles dissolved into 1.33L of water.(0.29M) 26. Calculate the molarity of a solution that has 39.6g of NaCl dissolved into 2.9L of water.(0.23M) 27. A Canoga Park Student is having difficulty getting a solid substance to dissolve in water. What are some things this student can do to help dissolve this substance? 28. Why is carbon placed on the periodic table before nitrogen?
