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How does the change in global temperature between 1850 and 2000 compared with the change that occurred 1850 and 1880?
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What political change occurred as a result of Japan's industrialization?
Leadership reverted to the emperor <------- novanet answer
What is dollars compared to pounds?
Change 1,000 in US dollars into British Pounds
Which describes a change that occurred in Rome about 100 B.C.?
Patricians were becoming wealthier and plebeians were becoming poorer.
What important change occurred during Andrew Jackson's presidency?
The extension of voting rights to all white males.
Which change in American Society occurred during World War 2?
Women replaced men in essential wartime industries.
When you mix two substances in a beaker and expect them to undergo a chemical change the temperature of the mixture does not change has a chemical change occurred?
a chemical change occurs
What are the signs of chemical change has occurred?
change in temperature formation of a precipitate color change formation of a gas disappearance of a solid new odor
How can you be certain that a chemical change has occurred?
Signs of chemical reactions may be: - Gas release - Formation of a precipitate - Change of color - Change of odor - Change of pH - Change of aspect - Change of viscosity - Change of the temperature - Visible formation of new compounds
How does temperature relate to amount of energy present in a substance?
Higher temperature means greater energy content compared to a lower temperature. The energy required to change the temperature is proportional to the mass of the system, the specific heat capacity, and the temperature change.
What clues can you use to identify a chemical change?
Characteristics of a chemical change can include a temperature change, a color change, the production of bubbles, the production of a precipitate, and a smell.
Which are 4 indications of chemical reaction has occurred?
The indicators of a chemical reaction are :- 1. Change in colour 2. Change in temperature 3. Evolution of a gas 4. Formation of a precipitate
On which temperature scale does 1 degree represent the smallest change in temperature?
The Fahrenheit scale change of 1 degree is smallest when compared to Celsius change. 1.8 degrees Celsius is 1 degree Fahrenheit
How does chemical change occurred in sugar to change a beaker from white to black?
At high temperature sugar is thermally degraded to brown caramel; further increase of temperature lead to to a carbonic residue or ash.
What pattern can you see between the serface temperature and the distance from the sun?
The surface temperature of the Earth is affected by many different factors. Although Earth's orbit alters the distance between the sun and Earth, the change in surface temperature is minimal compared to other factors. As evidence of this, consider the surface temperature at the poles, well below freezing at all times. Now compare this with the temperature in the tropics, where the temperature can be 60C higher than the poles. Consider also the change in temperature between night and day. Once again, there is a significant change in temperature with no significant change in distance from the sun. Factors such as cloud, wind and many other meteorological factors change the surface temperature more than the distance from the sun. However, we are able to say that the energy that reaches the Earth from the sun is reduced when Earth is further away from the sun. The amount of energy is inversely proportional to the square of the distance between sun and Earth.
How is a student able to conclude that a chemical reaction occurred?
Some observations: - change of colour - formation of a precipitate - change of odor - change of temperature - release of a gas - change of pH - change of viscosity etc.
What will you see during a chemical change?
Some of the evidence that indicates that a chemical change has occurred include a change in color, the formation of a precipitate from two solutions, gas bubbles, burning, change in temperature.
Where do you have the least temperature change between seasons?
At the equator.
