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Why can some changes to substances be reversed while others cannot?
Wiki User
∙ 6y ago
because ur trash
Anonymous
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What substances are pure substances water tea salt water copper brass air oxygen?
Water, copper, and oxygen are pure substances. The others are mixtures.
Why are some substances acids while others are bases?
it depends on the concentration of ions
List three basic household substances and how are the substances most often used?
Water, Salt, Sugar, Soap, detergent and so man others.
Can a chemical change be undone?
Some chemical changes are reversible, others are not.
Why do acids break down some substances faster than others?
the pH is of a greater concentration in one acid to another.
What substances can pass across them but others cannot?
semi-permeable membranes
Can Atherosclerosis be reversed?
There is disagreement among researchers on whether atherosclerosis can be reversed. Some say no. Others say with major lifestyle changes you can achieve some reversal. This means things like an exercise regimen and becoming a vegetarian.
When some substances can pass across them but others cannot?
membrane
When some substances can pass across them but others cannot biological membranes are said to have?
They are said to have semi-permeable membranes.That is,they allow some substances to pass through & prevent others due to the nature & composition of that substance.
What is the cell membrane which makes some substances can pass through it while others cannot?
The phospholipid bi-layer.
Do you see your self in the mirror as others see you?
No, you see a mirror image of yourself - one that is reversed. For example, if you have writing on your shirt, it will appear backwards in the mirror. Others see you non-reversed.
Does Copper bond with other substances?
yes it does bond with others substances
What substances are element?
All of the substances found in the Periodic Table are considered as elements. None others are.
Do all substances pass freely between the intracellular and extracellular fluids through a phospholipid bilayer?
No, the membrane is known as semi-permeable because some substances (such as water) can pass freely through - whereas others (such as ions) cannot.
Biological membranes are said to have what When some substances can pass across them but others cannot?
Semi-permeable membranes, crucial to osmotic processes.
What is meant by the term pschoactive?
Psychoactive substances are substances that act on the central nervous system to produce changes in mood emotion perception or consciousness. These substances can be either naturally-occurring or man-made and can be taken either in the form of drugs food beverages or supplements. Psychoactive substances can be divided into the following categories: Stimulants These substances increase alertness energy and focus and can include caffeine nicotine and amphetamines. Depressants These substances reduce alertness energy and focus and can include alcohol barbiturates and benzodiazepines. Hallucinogens These substances cause intense changes in perception and can include LSD MDMA and psilocybin. Analgesics These substances reduce pain and can include opioids such as morphine and codeine.The effects of psychoactive substances can vary greatly depending on the type dose and route of administration. Some substances can produce pleasurable effects while others can cause adverse reactions or even be fatal.
Do you see yourself in the mirror as others see you?
Looking in a mirror will result in the viewer seeing himself reversed. Others don't see you this way.
