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Mademuasel [1]
3 years ago
14

How can one show that elements that have different appearances have similar chemical properties?​

Chemistry
1 answer:
ad-work [718]3 years ago
4 0

Answer:

Elements within the same group have the same number of electrons in their valence (outermost) shells, and they have similar electron configurations. They exhibit similar chemical properties.

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What is a feature shared by all animal cells?
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Answer:

1. Animal cells are eukaryotic

2. All live things are made up of cells (I think)

3. Cells are the basic unit of all living things

Explanation:

Number 2 is probably wrong because I can't see the diagram but, all living things ARE actually made up of cells

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Hawaii, which sits over a hot spot located near the center of the Pacific
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Shield Volcano . I've been their before

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A chemical reaction in which an uncombined element replaces an element that is part of a compound is called a
san4es73 [151]

Answer:

A chemical reaction in which an uncombined element replaces an element that is part of a compound is called a simple substitution reaction or simple displacement reaction.

Explanation:

A simple substitution reaction or simple displacement reaction, called single-displacement reaction, is a reaction in which an element of a compound is substituted by another element involved in the reaction. The starting materials are always pure elements and an aqueous compound. And a new pure aqueous compound and a different pure element are generated as products. The general form of a simple substitution reaction is:

AB + C → A +BC

where C and A are pure elements; C replaces A within compound AB to form a new co, placed CB and elementary A.

So, in a Single replacement reaction an uncombined element replaces an element.

<u><em>A chemical reaction in which an uncombined element replaces an element that is part of a compound is called a simple substitution reaction or simple displacement reaction.</em></u>

3 0
3 years ago
(iii) Give two reasons why the electrolyte contains cryolite​
V125BC [204]

Answer:

The mixture of cryolite and aluminum oxide has a lower melting point than pure aluminum oxide. This means a lower amount of energy is required to establish effective conditions for electrolysis and thus makes it more cost effective.

Explanation:

3 0
3 years ago
Given that oxygen-16 and oxygen-18 both have an atomic number of 8, how many electrons, protons, and neutrons do these oxygen at
Mamont248 [21]
Because atomic number equals protons and electrons
8-electrons
8-protons
Protons+neutrons=mass
8+8=16 and 8+10=18
8-Neutrons for 16
10- Neutrons for 18
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3 years ago
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