Reminder: You need to have 5-10 large dead leaves for next week's lab. Get them now.
Now, in the large circle below, sketch using different colors the microscopic picture of a CaCl aqueous solution as it actually exists when dissolved in water. Refer to figure 1 on page 1 of the reading material Make sure that the ratio of the ions is correct.
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Water molecules in background (not drawn) We also discuss several other topics like What is the layer of dividing cells at the base of epidermis?
Make sure you fill the entire
4. Consider the following chemical reaction again: Don't forget about the age old question of What are risk factors for developing eating disorders?
NaHCO3 (ag) + HCl(aq)
+ NaCl(aq) + H2O
a. How many different types of atoms are present? b. How many different molecules are present? C. How many different states of matter are present? d. How many oxygen atoms are present before the reaction begins? e. How many oxygen atoms are present after the reaction ends?__ 3 f. If sodium bicarbonate (NaHCO3) was alone present dissolved in water, from your practical We also discuss several other topics like What is the difference between fissure and sulci?
knowledge that you gained after performing, the separation of salt, sand and salicylic acid experiment, how would you obtain pure dry sodium bicarbonate? Don't forget about the age old question of What is global warming and how did it start?
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use distillation to heat the mixtine to Vaporize the one with the lower !
Reminder: You need to have 5-10 large dead leaves for next week's lab. Get them now. Prelab 6: Chemical Reactions Part 1 Name:
1. There are many important symbols used in chemical equations. Complete all blanks in the table below.
2. Consider the following chemical reaction:
NaHCO3 (aq) + HCl(aq)
+ NaCl(aq) + H2O (1) + CO2 (s)
a. Circle the reactant(s). b. Underline the product(s). C. What does the term aqueous (aq) mean?
a Solution or mixture in which water is the
Solvent. d. What observation would you likely see as this reaction progressed? there would be
e. How does the term aqueous (aq) differ from the term liquid (1)?
An aqueous solution is one where water is the solvent in your Solution where
describes the phase of matter. 3. CaCl2 is a water-soluble ionic compound. Here you are bring asked to sketch using different colors the
microscopic picture of CaCl2 as it actually exists when dissolved in water. Firstly, NaN is done for you here as an example.
Water molecules in background (not drawn) Notice that there are 3x sodiums as nitrogens