ch8 reaction lab followup
1.Explain why fluorine gas cannot be generated by the decomposition of water. _________________________________________________________________
2. A spark is put into a test tube of hydrogen; the test tube of hydrogen is on the moon. What will happen?________ Why?________________________________________
When hydrogen burns in air, _____________ is produced. Write an equation for this reaction, include states
3. A 3% Hydrogen peroxide (H2O2) is mixed with yeast. Bubbles appear which cause a glowing splint to relight. What is the gas?_______. The yeast was a _______________ that
___________________ the reaction. In this reaction, the other product must contain ____, because of the law of __________________. The other product is__________. (write the chemical equation)
Hydrogen peroxide is kept in a brown bottle because__________________________
Classify this reaction as one of the 5 types___________________________________
4.Write a chemical equation for the combustion of C6H12 gas. Include states.
5.What type of water did the lead II nitrate react with?_______ why? _________________
6.Based on your lab experience list 3 signs of a chemical reaction: _________________,
_______________________, and ____________________________________.
7.When calcium metal is mixed with a solution of hydrochloric acid, the flask gets hot and a gas is produced which pops when tested with a flaming splint. The gas is _______. Why was the collecting tube held upside down for this gas?_______________________
Are these endo or exothermic reactions?_________________
Classify the burning gas reaction as one of the 5 types._____________________.
Write a balanced chemical equation for the acid-metal reaction; include states.
________________________________________________Classify______________
If the liquid remaining at the end of this metal-acid reaction were boiled to dryness, what, if anything, would be left?______________________________.
8.Joe Science mixes a solution of sodium sulfate with a solution of barium chloride. A white solid appears and settles on the bottom of the test tube; the test tube gets cold. What is a general name for a solid that falls out of a solution reaction? _____________. Is the solid formed in this reaction soluble or insoluble? ___________________. What is the formula of this solid? __________. How do you identify which product is the solid?
_________________________ Is this reaction endo or exothermic? ____________
Classify this reaction as one of the 5 types___________________________________
Write a chemical equation for this reaction, include states.
Joe’s mom comes into the room to clean up. She sees the liquid with the white solid, thinks it is alkaseltzer, and drinks only the liquid. She says ‘this tastes like___________’ why did she say that?
Would a magnesium chloride solution and barium hydroxide solution react when mixed? Why? If it reacts, write a chemical equation for the reaction.
Would a magnesium chloride solution and sodium nitrate solution react when mixed? Why? If it reacts, write a chemical equation for the reaction.
9.Last week, we did an experiment in which we burned magnesium in a crucible. Write a word, formula, and chemical equation for this reaction; include states:
Word__________________________________________________________________
Formula ________________________________________________________________
Chemical _______________________________________________________________
10. make a sketch and label these parts of the fuel cell kit
photovoltaic cell, load, Hydrogen and Oxygen tank, electrolyzer, hydrogen fuel cell
describe the energy changes going on in each part
give the 2 equations with states for the reactions in the hydrogen fuel cell and in the electrolyzer