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AfilCa [17]
3 years ago
5

Explain how chemical properties and chemical changes are different?

Biology
1 answer:
Zepler [3.9K]3 years ago
3 0

Explanation:

 A chemical property describes the ability of a substance to undergo a specific chemical change. A chemical reaction is a process that occurs when one or more substances are changed into one or more new substances.

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What are 5 contrasts between elements
blsea [12.9K]

Answer:

1. Elements have only 1 type of atoms

2. Atomic Number

3. Atomic Mass

4. Isotopes

5. Allotropes

Explanation:

An element is a pure chemical substance made of same type of atom.

Elements are distinguished by their name, symbol, atomic number, melting point, boiling point, density and ionization energies. In the Periodic Table, elements are arranged according to their atomic number and they are grouped according to similar chemical properties and are depicted by their symbols.

<em>1. Elements have only 1 type of atoms</em>

<em>2. Atomic Number</em>= Number of protons is also indicative of electric charge or number of electrons present in the nucleus which determines chemical properties of the element.

<em>3. Atomic Mass</em>= the atomic mass of the element which is the total number of protons and neutrons in the nucleus of an atom of the element.

<em>4. Isotopes</em>= isotopes of an element have the same number of protons in their nucleus but differ in the number of neutrons. Naturally occurring elements have more than one stable isotope. Thus isotopes have similar chemical properties (due to same number of protons) but different nuclear properties (due to different number of neutrons).

<em>5. Allotropes</em>= atoms of an element can form bonds with each other in more than one way leading to difference in their chemical properties

8 0
3 years ago
Hi can someone pls help me answer this question i srsly need it, pls dont put random letters, thank u :'&gt;
labwork [276]

If pregnancy among women does not occur, then menstruation occurs. The menstrual cycle usually lasts about 28 days.

<h3>What do women experience during their menstrual period? </h3>

During menstruation, women may experience abdominal cramps, headaches, backache, and nausea.

The stage in which a woman is most fertile is called Ovulation. During this step, an egg is released from the follicle in the ovaries.

If a fertilized egg successfully embeds itself in the uterine lining, then the woman becomes pregnant.

If the fertilized egg does not manage to embed in the uterine lining, then menstruation will occur.

The two main hormones that control the menstrual cycle are estrogen and progesterone. If the egg is not fertilized, then progesterone levels drop.

The estrogen needs to stop FSH to be produced to make sure only one egg matures in the cycle.

Learn more about the menstrual cycle here:

brainly.com/question/1483249

3 0
2 years ago
List four levels of an energy pyramid, or four links in a food chain, involving humans. List them in order, from base to top lev
Brrunno [24]

Answer:

Top predator (top level)

Tertiary consumer

Secondary consumer

Primary consumer

Producer (base)

8 0
3 years ago
If you could specialize yourself the way you want how would you make your self look
never [62]

Answer: Well I don't know it depends

Explanation:

3 0
3 years ago
Read 2 more answers
How do scientist classify kingdoms
Llana [10]

Answer:

The way that scientists classify kingdoms is by their scientific name when they first discovered them so there won’t be no confusion in our world. They can also classify them by what they eat or what environment they live in.

Explanation:

6 0
4 years ago
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