Good morning class. We do not have a lot of time today in class so lets get straight into the lesson and the practice questions.
Lets start by defining the first term of this section, activity series. An activity series is a list of elements organized according to the ease with which the elements undergo certain chemical reactions. The most reactive element, placed at the top in the series, can replace each of the elements below it from a compound in a single-replacement reaction.
An activity series is used to help predict whether certain chemical reactions will occur. For example, according to the activity series for metals in the table in your book, aluminum replaces zinc. Therefore, we could predict that the following reaction does occur. 2Al(s)+3ZnCl2(aq)-3Zn(s)+2AlCl3(aq).
Lets do extra practice. 1. Ni(s)+H2O(l) is no. 2. br2(l)+Kl(aq) is no. 3. is yes. 4 is no. 5 is yes. 6 is no. More extra practice. Q1. The ability of an element to react is the elements? A1. Valence. Q2. What is the name of a list of elements arranged according to ease with which they undergo certain chemical reactions? A2. Activity series. Q3. An element in the activity series can replace any element? A3. Below it on the list
Q4. What can be predicted by using an activity series? A4. Whether a certain chemical reaction will occur. Q5. The activity series of metals indicates the ease with which metal? A5. Atoms lose electrons. Q6. If a certain metal is placed in an ionic solution containing another metal and no reaction occurs, then the metal originally in the solution is? A6. Higher on the activity series. Q7. Predict what will happen when calcium metal is added to a solution of magnesium chloride? A7. calcium chloride forms
Q8. Predict what happens when zinc is added to water. A8. No reaction occurs. Q9. Predict what happens when lead is added nitric acid. A9. Hydrogen is released. Q10. Magnisium bromide+Chlorine yeild. A10. Mg(Cl)2 and Br2. BING! Have a great afternoon.