George

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What is Science?.... mysterious because its never ending.

in the real world scientist...... are always discovering new things.

in science class we....... discover new thingsan expand our knowledge.

the purpose of this site is ....... to share ur work an ideas with others.

My Lab Safety Poster:



My Secret Life As a Scientist



Reflection on the Changes in States and Viscosity Lab (What I Learned....)

i learned the more you heat up a substance the viscosity decreases, and when you cool down the substance the viscosity increases.

my reflection of this Gas Laws lab is the more the volume increses the temperature also increases and when the temperature decreses the volume decreses also. media type="custom" key="10921256"

Lab report: Introduction: in class we did a lab that measured the tempature of water while it was at room tempature and warm water. we also made a recorded the data to make a table of the beginning tempature, time it took to melt, and the final tempature. we also recorded the biggest drop.

problem: The purpose of this lab was to expirament with tempature an what happens when u add ice to room tempature water and warm water.

Hypothesis : my pridiction was that the ice would melt faster in the warmer water then the room tempature water.

Materials: In this lab we used the following: A tempature probe, 100ml of room tempatured water, 100ml of warm water, a computer that the probe plugged into, and a data table,

Procedure: first we plugged the tempature probe into the computer. then we opened up a program that recorded the data from the probes. then we go 100ml of room temapature water an put the probe in the water then added an ice cube to the water and recorded the tempature until the ice melted. then we got 100ml of warm water and added the probe and added an ice cube then recorded the tempature.

Data and observations: my observation was the warmer water melted the ice cube faster but it also cooled down the water as it disolved.
 * Beginning tempature || time to melt || final tempature ||
 * < cup1: 21(c) ||< 225 (s) ||< 15(c) ||
 * cup2:41(c) || 160(s) || 30(c) ||

Results: When the ice melted in the water it desolved but also brought the tempature down.
 * Biggest drop || time ||
 * cup3: 19.1 - 14.2(c) || 1-2(s) ||
 * cup4: 41.1-35.2(c) || 1-2(s) ||

Conclusions: My hypothisis of this lab was correct. I predicted that the ice would melt faster in the warmer water, but i didnt not mention that it also would bring down the tempature. I learned from this lab that the ice cube would bring the tempature of the water down really fast but then would stay at a tempature after 3 or 4 seconds. But the hotter the water was the faster it melted the ice cube.