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Travka [436]
4 years ago
13

1.)What is a chemical reaction?

Chemistry
1 answer:
harina [27]4 years ago
4 0
A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Photosynthesis is an example from daily life
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When magnesium reacts with chlorine, magnesium ions, Mg2+, and chloride ions, Cl−are formed. In this reaction, magnesium atoms A
Slav-nsk [51]

<u>Answer:</u> In the reaction, magnesium atoms lose electrons.

<u>Explanation:</u>

An ionic compound is defined as the compound which is formed when electron gets transferred from one atom to another atom. These are usually formed when a metal reacts with a non-metal or a metal reacts with a polyatomic ion or a reaction between two polyatomic ions takes place.

Magnesium is 12th element of the periodic table having electronic configuration of 1s^22s^22p^63s^2

This element will loose 2 electrons to form Mg^{2+} ion

Chlorine is 17th element of the periodic table having electronic configuration of 1s^22s^22p^63s^23p^5

This element will gain 1 electron to form Cl^- ion

By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.

The ionic compound formed is MgCl_2

Hence, in the reaction, magnesium atoms lose electrons.

5 0
4 years ago
EASY How does the force of friction affect the motion of objects?
QveST [7]

Answer:

It causes the object to slow down or stop.

Explanation:

Friction is a unknown force pressing against another force slightly, making the moving object slow down.

8 0
3 years ago
Read 2 more answers
What is the volume in mL of a cube with each side 80mm long ?
dem82 [27]
<h3>Answer:</h3>

512 mL

<h3>Explanation:</h3>

We are given;

  • A cube with a side 80 mm long or 8 cm long  

We are required to calculate the volume;

  • Volume refers to the amount of space an object occupies.
  • To calculate the volume of a cube we get the cube of its side;
  • That is, volume of the cube = l³

Therefore;

Volume = (8 cm)³

            = 512 cm³

But; 1 cm³ = 1 mL

Therefore, the volume of the cube in mL is 512 mL

5 0
3 years ago
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Why is it important that a hypothesis be stated so that it can be modified?
ANEK [815]
Because you need to know what you are looking for before actually trying something so you can prevent any accidents by doing stuff at random
3 0
3 years ago
What is the term for the study of matter and the changes it undergoes
WARRIOR [948]

Answer:

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Explanation:

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7 0
4 years ago
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