9. How many protons, electrons and neutrons are there in the following elements (select the most common isotope)? a) Lithium
b) Fluorine
c) Nitrogen
11. Complete the following table:
Chemical Group Physical Properties Chemical Properties
Alkali Metals
Halogens
Noble Gases
Hydrogen
12. Draw a Bohr diagrams for the following atoms
Boron Nitrogen
13. Draw a Bohr diagrams for the following ions
Magnesium Sulfur
14. Is the ion of the following element positively or negatively charged? a) Beryllium
b) Potassium
c) Bromine
d) Oxygen
15. State the ionic charge of each ion. a) Bicarbonate
b) Hydroxide
c) Nitrate
d) Magnesium
16. Do metals gain or lose electrons in an ionic bond?
17. Positive ions are called _______________.
18. Negative ions are called ______________.
19. Name the compounds a) NaCl
b) [pic]
c) [pic]
d) [pic]
e) [pic]
f) [pic]
g) [pic]
h) [pic]
i) [pic]
j) [pic]
23. Name the compounds. a) [pic]
b) [pic]
c) [pic]
d) [pic]
e) [pic]
f) [pic]
g) [pic]
h) [pic]
i) H2O2
20. Name the following Polyatomic Ions a) [pic]
b) [pic]
c) [pic]
d) [pic]
e) [pic]
f) [pic]
g) [pic]
h) [pic]
21. Write the formulas for the following oxy-acids, don’t for get [pic] sign. a) Nitric acid
b) Chloric acid
c) Carbonic acid
d) Phosphoric acid
e) Sulfuric acid
22. Write the formulas for the following compounds. a) Sodium hydroxide ― b) Sodium chlorate ― c) Calcium nitrate ― d) Zinc Nitrate ― e) Ammonium sulfate ― f) Lithium Bicarbonate ― g) Calcium phosphate ― h) Calcium chlorate ― i) Aluminum nitrite ―
24. Name all the diatomic molecules and give their chemical formula?
26. Write a chemical and word equation for the following,
When hydrogen peroxide reacts with oxygen with the catalyst manganese oxide, water and oxygen is produces.
Chemical equation:
Word equation:
28. Write the following chemical equations as word equations. (You can balance and state the type of reaction too.)
a) [pic]
b) [pic]
c) [pic]
29. Write the general formula for the different types of reactions.
Synthesis:
Decompositions:
Single displacement:
Double displacement:
30. Balance the following equations. (State the type of reaction too)
a) [pic]
b) [pic]
c) [pic]
d) [pic]
e) [pic]
f) [pic]
31. State the Law of Conservation of Mass.
36. What does pH stand for and what is a pH scale used for?
38. When an acid and base react they produce _________ and __________.
40. Name the following Binary Acids. a) HCl
b) HF
c) HI
d) HBr
41. When do atoms bond covalently and when do they bond ironically?
composed of ions; elements or molecules which are positively charged are called cations and elements or molecules which are negatively charged are called anions. A simple model to be used to imagine what ions (cations or anions) look like at the atomic level, is a sphere. For simple monoatomic ions and most polyatomic ions we can think of as charged spheres of different sizes. In the state the spheres (ions) are arranged so that any particular ion is surrounded by the oppositely charged ion. What ever…
All metal ions in solution are 'associated' with water. The water molecules can also be weakly bonded or more strongly as a ligand to form a complex ion, and these can also present in solid 'hydrated' salts of crystallization. E.g Copper(II) nitrate (Cu(NO3) 2.3H2O). A complex ion has a metal ion at its centre with a number of other molecules or ions surrounding it. These can be considered to be attached to the central ion by co-ordinate (dative covalent) bonds. The molecules or ions surrounding…
neurotransmitters and ionic concentrations on contraction strength and rate will be investigated. Written by staff of ADInstruments With acknowledgement to: Dr. Stuart I. Cromarty, Department of Natural Sciences, Assumption College, Worcester, MA, USA. [pic] Background Smooth muscle is one of three muscle fiber types found in animals. Unlike skeletal and cardiac muscle cells, smooth muscle cells are not striated, and have single nuclei. Smooth muscles are typically under control of the autonomic…
or kJ/mol Zeff (shielding of electrons within an atom) [simplified Slater equation] Born-Haber Cycle and calculation of the energy changes in a reaction Be able to write the electron configuration (1s2 2s2 2p6…) of an atom or ion Be able to identify an element or ion given its electron configuration (and charge if any) Be able to identify an electron configuration as allowed, excited, or forbidden Be able to state the Heisenberg Uncertainty Principle, the Aufbau Principle, Hund’s Rule, and…
Water (Summary) 1. Water is distributed on Earth as a solid, liquid and gas Students learn to: • Define the term solute, solvent and solution A solution is a homogeneous mixture in which the dispersed particles are so small (molecules or ions) that they never settle out and cannot be seen by a microscope. Solute is the substance which is dissolved in a solution. Solvent is the substance which dissolves other substances. Reference: textbook page 18 • Identify the importance…
formation of a complex ion FeSCN2+. This was accomplished using a colorimeter to measure absorbance of some known concentration solutions in order to generate the calibration curve. The equation of the graph was used to compute the equilibrium concentrations of the reactants and products, needed to calculate the equilibrium constant for the reaction. I. Introduction: The purpose of the experiment is to determine the equilibrium constant for the formation of a complex ion iron (III) thiocyanate…
A 7. B 8. Penalise pH given to 1 dp first time it would have scored only (a) (i) Kw = [H+] [OH–] (1) (ii) pH = –log [H+] (1) or in words or below unless contradiction (iii) Calculation: [H+] = [pic] (1) = 2.34 × 10–7 \ pH = 6.63 or 6.64 (1) Explanation: pure water \ [H+] = [OH–] (1) 5 (b) (i) [OH–] = 0.150 \ [H+] = 10–14/0.15 = 6.66 × 10–14 or pOH = 0.82…
Identify data sources, gather, process and analyse information from secondary sources to identify the industrial separation processes used on a mixture obtained from the biosphere, lithosphere, hydrosphere or atmosphere and use the evidence available to: Identify the properties of the mixture used in its separation Identify the products of separation and their uses Discuss issues associated with wastes from processes used |Sphere…
