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3 years ago

What is a radical in chemistry ?

Chemistry

1 answer:

anygoal [31]3 years ago

3 0

Answer: In chemistry, a radical is an atom, molecule, or ion that has an unpaired valence electron.

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Do drugs affect the mind?

arlik [135]

The answer is Yes, drugs affect the mind.

Drugs affects various parts of mind differently , drugs can slow down or speed up the central nervous system. Drugs effects brain areas that are important for life sustaining activity and some drugs also become addictive.

The part of brain that is important for positive forms of motivation, Basal ganglia ,that got affected by overdose of drugs that beside that drug nothing can be pleasurable for the person who is taking the drug .

3 0

3 years ago

Describe how you could feel weightless on Earth.

Alexeev081 [22]

Gravity is a force that acts between the Earth's mass and the mass of other objects that surround it. ... Astronauts merely feel weightless because there is no external contact force pushing or pulling upon their body. They are in a state of free fall.

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3 years ago

for each pair of compounds below , identify the one that would be expected to have more ionic character.explain you choice. (a)N

Tju [1.3M]

Answer:

a)NaBr

b)FCl

Explanation:

To identify which compound is more ionic we will calculate the electronegativity difference.

A) NaBr

Electronegativity of Na = 0.93

Electronegativity of Br = 2.96

Electronegativity difference = 2.96- 0.93 = 2.03

HBr

Electronegativity of H = 2.2

Electronegativity of Br = 2.96

Electronegativity difference = 2.96 - 2.2 = 0.76

NaBr have more ionic character because of large electronegativity difference.

B) BrCl

Electronegativity of Cl = 3.16

Electronegativity of Br = 2.96

Electronegativity difference = 3.16 - 2.96 = 0.2

FCl

Electronegativity of F = 3.98

Electronegativity of Br = 2.96

Electronegativity difference = 3.98 - 2.96 = 1.02

FCl have more ionic character because of large electronegativity difference.

8 0

3 years ago

Three things about the body systems?

makvit [3.9K]

Answer:

Three things about our body's systems:

All systems have a method of self-regulation or exogenous regulation by other systems.

All systems have a balance in their functions.

All the systems of our organism are intertwined with each other thus giving general vitality.

Explanation:

Best known systems:

Renal, respiratory, circulatory, cardiac, nervous, immune, blood, muscular systems.

All of them include the participation of one or more organs

5 0

3 years ago

Hannah does an experiment she has two colorless chemicals that she mixes together in a beaker which of the following indicates t

mrs_skeptik [129]

1.the chemical change color from colorless to purple

2. A yellow gas forms

3.a brown solid forms in the bottom of the beaker

4.the temperature of the chemicals rises 15 Celsius

Explanation:

All of the options are proofs that chemical change has occurred.

A chemical change is one with the following properties:

A new kind of matter is usually formed as seen by the gas evolution and the formation of the insoluble precipitate i.e brown solid at the bottom of the beaker.
They are not easily reversible.
Usually accompanied by energy changes as seen in the rise in temperature.
Color changes can also infer chemical changes in a reaction.

learn more:

Chemical change brainly.com/question/9388643

#learnwithBrainly

8 0

3 years ago