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What political change occurred as a result of Japan's industrialization?
Leadership reverted to the emperor <------- novanet answer
Which describes a change that occurred in Rome about 100 B.C.?
Patricians were becoming wealthier and plebeians were becoming poorer.
What is dollars compared to pounds?
Change 1,000 in US dollars into British Pounds
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.
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 tell if a reaction has occurred if the temperature or colour changes or the gas has given off?
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 - Change of the state of the matter - A violent reaction with explosion or fire - Bubbling - Emitting a sound - Emitting a light
Which indicates that a reaction has occurred after one substances has been added to another?
The appearance of a color change, formation of a precipitate, evolution of gas, or change in temperature are common indications that a reaction has occurred when one substance is added to another. These observable changes often signal a chemical reaction taking place between the reactants.
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.
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.
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.
If hydrochloric acid is added to sodium hydroxide the temperature increases but there is no visible change did a chemical or physical change occur?
A chemical change occurred because the reaction between hydrochloric acid and sodium hydroxide generated heat, indicating a release or absorption of energy. Even though there may not be a visible change, the temperature increase is evidence of a chemical reaction taking place.
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
Why is it important to observe temperature change when two chemical are mixed?
Observing temperature change when two chemicals are mixed can provide insight into whether a chemical reaction has occurred. An increase or decrease in temperature may indicate that the reaction is exothermic or endothermic, respectively. Monitoring temperature change can also help determine the reaction rate and the efficiency of the reaction.
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 are the four occurrences indicate a chemical reaction has occurred?
A chemical reaction can result in any or all of the following: - a change in temperature (up or down) - a change in color - a smell that wasn't there before - the formation of bubbles (indicating the production of a gas) - the formation of a precipitate
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
