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What will happen to the different indicators when dipped with acids and with bases?
When indicators are dipped in acids, they will change color to indicate acidity, usually turning red or orange. In contrast, when indicators are dipped in bases, they will change color to indicate alkalinity, usually turning blue or purple. This color change is due to the shift in the concentration of hydrogen ions in the solution.
Why do you need indicators of chemical change?
Indicators of chemical change are needed to detect when a chemical reaction has occurred. They can provide visual cues, such as color changes or gas production, that indicate a chemical transformation has taken place. These indicators help scientists and chemists monitor and understand the progress of reactions.
What does the biohazard symbol indicate?
The biohazard symbol indicates the presence of materials that pose a risk to human health or the environment due to their biological nature. It is commonly used to identify potentially infectious substances, such as medical waste, that require special handling and disposal procedures to prevent contamination and spread of diseases.
Which biological molecule is iodine used to indicate?
Iodine is used to indicate the presence of starch. When iodine comes into contact with starch, it forms a dark blue-black complex, providing a visual indicator of the presence of starch in a biological sample.
How algae and freshwater shrimps are used to measure pollution in water?
Algae and freshwater shrimp serve as bioindicators for measuring water pollution due to their sensitivity to changes in their environment. Algae can indicate nutrient levels, such as nitrogen and phosphorus, as their growth rates respond to excess nutrients from pollution. Freshwater shrimp, on the other hand, can be assessed for their health and diversity; declines in their population or changes in behavior can signal the presence of toxins or degraded water quality. Together, these organisms help monitor ecosystem health and the impact of human activities on aquatic environments.
Why do scientists use indicators?
to indicate something
What would cause indicators not to work?
if they dont indicate anything.
What technical indicators for charts indicate momentum and which measure trend?
Momentum indicators: - RSI - CCI - Stochastic Momentum Index Trend indicators: - ADX - CSI - MACD
What is a bioindicator?
A biological indicator is a device to monitor the sterilization process that consists of a standardized population bacterial spores known to be resistant to the mode of sterilization being monitored. Biological indicators indicate that all the parameters necessary for sterilization were present.
True or false - is it possible to make indicators out of vegetables?
Yes, you can. They are not as good as the chemical indicators, but they can indicate a basic acid/alkali difference.
What are turn signal indicators?
Turn signal indicators are lights. The flash to tell you, or indicate, that a turn signal is on, and which way the lights are flashing.
How did Ruth partick guage water quality?
Ruth Patrick gauged water quality by examining the presence and diversity of certain types of organisms, such as diatoms and algae, in the water. These organisms are sensitive to changes in water quality, so their abundance and health can indicate the overall condition of the aquatic ecosystem. Patrick developed biological indicators and methods to assess water quality based on these organisms, pioneering the field of freshwater ecology.
What are the biological indicators for air pollution?
Biological indicators for air pollution include lichens, mosses, and certain tree species that show sensitivity to pollutants like sulfur dioxide and heavy metals. Additionally, the health of sensitive species like bees, butterflies, and amphibians can also indicate air pollution levels. Changes in biodiversity and population sizes of these species can provide valuable insights into the impacts of air pollution on ecosystems.
How many types of indictors are used in titration?
There are two main types of indicators used in titration: color indicators and pH indicators. Color indicators change color at specific pH ranges to indicate the endpoint of the titration, while pH indicators change color based on the pH of the solution.
Why plants are not used as indicators of water pollution?
I think its because animals can be used to indicate pollution because different animals survive with different levels of oxygen. E.G a sludgeworm or a bloodworm needs little oxygen to suvive so they are indicators of polluted water. Freshwater shrimp and stonfly indicate clean water because they need lots of oxygen to survive. Plants don't use oxygen to survive, they take in carbon dioxide instead.
What will happen to the different indicators when dipped with acids and with bases?
When indicators are dipped in acids, they will change color to indicate acidity, usually turning red or orange. In contrast, when indicators are dipped in bases, they will change color to indicate alkalinity, usually turning blue or purple. This color change is due to the shift in the concentration of hydrogen ions in the solution.
Why do you need indicators of chemical change?
Indicators of chemical change are needed to detect when a chemical reaction has occurred. They can provide visual cues, such as color changes or gas production, that indicate a chemical transformation has taken place. These indicators help scientists and chemists monitor and understand the progress of reactions.
