Lab 15: Chemical and Physical Properties Introduction Pre-lab Questions 1. Determine if the following scenarios represent a chemical or physical property. a. Dry ice (CO2) sublimes (changes from a solid to gas) at -78 ⁰C at standard atmospheric pressure. Physical b. Iron metal rusts in moist conditions. Chemical c. Hydrogen peroxide decomposes in the presences of light or heat. Chemical d. Silver metal does not react with hydrochloric acid (HCl). Chemical e. Copper is a
Premium Melting point Water Sodium chloride
A Place Where the sea Remembers is a book written by the author Sandra Benitez. The story takes place in a small town in Santiago‚ Mexico. Candelario (the salad maker)‚ Marta (the 16 year old that’s pregnant)‚ Fulgencio (the photographer that loses all of his equipment are all characters that go through hardships and unfairness. The conflicts this essay will have are person vs person because the characters that I will be describing are having problems with other characters. The first conflict will
Premium Abortion Pregnancy Conflict
that is common with most matter just before solidification. Once the water temperature has dropped to 0° C‚ the rows of molecules connect at the ends to form an open-ended hexagon. Because of the empty spaces into the middle of these hexagons‚ the ice takes up more space than the same amount of liquid water. The net result is approximately 9% more volume. The disadvantages of this peculiar property are many. For example‚ if a container holding water is made of something rigid‚ like metal or glass
Premium Water Solid Density
Wisconsin Glaciation Effects on Minnesota A glacier is a large piece of ice on land‚ normally formed over time. A glacier forms when snow falls and compresses together to form the large mass of ice over time. The glaciers can move because of gravity‚ and the smoothness of the glacier. Glaciers were present in Minnesota thousands of years ago‚ and as they retreated they left behind large amounts of glacier meltwater and various landforms still present today.Glaciers are both constructive and
Premium Water Glacier Earth
anti-caking additive What at Sea salt? Used for cooking and cosmetics A natural form of salt Course grind (bigger chunks) It’s extract from ocean water through evaporation process What is sand? Loose particle of hard broken rocks. Normally brown in color Found on beach What is calcium chloride? another form of salt capable of absorbing a lot of liquid harmful to humans and live plants used to preserving commercial canned foods and removing ice from
Premium Sodium chloride Water Sodium
(212 degrees.) The way he goes about conducting his experiment is simply stepping out and tossing the two glasses in the air the cold water falls to the ground still wet and on the other hand when the hot water falls to the ground it falls solid as ice thus proving that hot water freezes fastest. In my opinion this experiment isn’t as controlled as it should be there are many uncontrolled variables that are not even mention‚ but he does repeat the experiment two separate times leaving the viewer with
Premium Temperature
going to do this is by heating up 100ml of water on a Bunsen burner then adding ice cubes. Use a thermometer to measure the temperature every 30 seconds until it reaches a plateau. Hypothesis: As more time passes‚ the temperature of the water increases. Independent variable: Time Dependent variable: Changing water temperature Controlled variable: Fire‚ amount of water and apparatus Apparatus: * Five ice cubes * 250ml beaker * 100ml tap water * Bunsen burner * Tripod
Premium Phase Heat Fahrenheit
you need to first pound the dry ice into small pieces. To do so‚ place the dry ice into a plastic packet and tie the packet up firmly. Now pound the packet with the help of a hammer. Once the dry ice has broken down into small pieces‚ scatter a few pieces in the warm water. You will immediately see white smoke rising from the water. This is nothing but condensed carbon dioxide. The quantity of smoke will depend on how hot the water is and also on the quantity of dry ice put in the water. For constant
Premium Water Carbonated water Distillation
(drinking) water. In order to evaluate this effectiveness‚ the yield and purity of only the ice product is investigated before and after a number of wash cycles. A 1000g solution of 5 wt% CuSO4 underwent crystallization for one hour with the use of ice crystal seeding and the agitation of a stirrer at 500rpm. After the crystallization process‚ the mass of the ice product and filtrate were recorded. The ice product was then washed with de-ionised water under Buchner vacuum filtration‚ before the
Premium Water Crystal Concentration
December 29‚ 2013 was the date that I recall when it happened. It was a chilly winter day in Kagawong. I was visiting my grandparents house about a mile from the town on Manitoulin Island in Canada. Ice hung off the tree branches in glistening icicles. Snow‚ as tall as a mailbox‚ was piled up on the sides of the roads. It was only noon when my grandpa walked into the room. My grandpa is a tall man with broad shoulders‚ grey hair‚ and a black and white beard. He always wears his brown boots with a
Premium Automobile Family Grandparent