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Luba_88 [7]
3 years ago
7

A substance formed when two or more elements combine and lose their distinct properties is

Chemistry
1 answer:
hram777 [196]3 years ago
7 0
Is a compound that went through a chemicAl change
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Which cell structure is found in animals, but not in plants?
andrezito [222]

Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not.

4 0
3 years ago
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What is the symbol of the ion with 36 electrons and a +2 charge?
AlladinOne [14]

Answer:

Strontium

Explanation:

The atomic number of strontium is 38.

It has 38 electrons.

It is alkaline earth metal. It has two valance electrons.

Strontium loses its two electrons and form cation with +2 charge.

Electronic configuration;

Sr₃₈ = [Kr] 5s²

The valance electrons present in 5s are lost by strontium atom and form Sr⁺² cation.

it is yellowish-white metal.

It is highly reactive.

It form salt with halogens.e.g

Sr    +   Br₂    →     SrBr₂

IT react with oxygen and form oxide.

2Sr   +   O₂   →    2SrO

this oxide form hydroxide when react with water,

SrO  + H₂O   →  Sr(OH)₂

With nitrogen it produced nitride,

3Sr + N₂     →  Sr₃N₂

With acid like HCl,

Sr + 2HCl  →  SrCl₂ + H₂

3 0
3 years ago
How do the elements in each group differ? How are they similar?
bulgar [2K]

Answer:

All the elements in one group have the same number of valence electrons. ... Since elements in a group have the same number of valence electrons, they behave similarly in chemistry. An example would be the alkali metals (excepting hydrogen. Hydrogen is in this group only because it has one valence electron.

Explanation:

5 0
2 years ago
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_ is an example of a homogeneous material.
Degger [83]

Answer:

concrete

Explanation:

because it is simply a variety of calcium compounds in a single mixture. when mixed with water and solid substances , it become concrete.

7 0
3 years ago
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which of the following sets of quantum numbers is not allowed? a. n = 1, = 0, and = 0 b. n = 1, = 0, and = 1 c. n = 6, = 4, and
dangina [55]

Answer:

The answer is C

Explanation:

6 0
2 years ago
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