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Rudiy27
3 years ago
14

Describe two observations you might make when a chemical change occurs

Chemistry
1 answer:
Sav [38]3 years ago
7 0
The first one is color change
Second is the precipitate present
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In nerve impulse conduction, what happeris after the neurotransmitter is
AURORKA [14]

Answer:

The correct option is;

Action potentials travel the length of the axon

Explanation:

A dendrite are nerve cell projections that are used for receiving signals from other nerve cells

A neurotransmitter is the chemical, produced by the nerve cell to contain the message the nerve cell intends to transmits across a neural junction, to the cell for which the message is meant such as a muscle cell, gland cell, or other nerve cells

Therefore, the received message from the dendrite by the present neuron are transported using action action potential which is the means by which electrical signals are transported by a neuron through the length of the axon which is the projection of the nerve cell, known as the nerve fiber that conducts action potential which are electrical impulses to other destination by traveling the length of the of the axon to the location of the destination cell of the action potential

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3 years ago
How is the hardness range for a mineral determined?
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As common sense dictates, Mohs Scale is based on the fact that a harder material will scratch a softer one. By using a simple scratch test, you can determine the relative hardness of an unknown mineral.
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Tobacco's main ingredient is nicotine,alcohol,tar,cigarettes?
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The correct answer is nicotine. It is the main ingredient in a tobacco. Nicotine is an addictive substance thus overuse of the substance will lead to addiction. It acts as a stimulant and a depressant. Tobacco can be dried for smoking and can also be consumed directly.
3 0
4 years ago
I’ll give you a lot of points and mark you brainlist if you awnse all 3
suter [353]

Answer:

Magma

Volcanic glass

Granite and pumice

Explanation:

7 0
3 years ago
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What is the only way to be certain that a chemical change has occurred
kati45 [8]

Answer:

New kinds of products forms and the reaction is not easily reversible.

Explanation:

The only way to be certain that a chemical change has occurred is by finding out if new kinds of products have been formed.

A chemical change is a change in which new kinds of matter is formed. It is always accompanied by energy changes.

The process is not easily reversible.

Examples of chemical changes are combustion, rusting of iron, precipitation and souring of milk.

4 0
3 years ago
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