Question

Date:08/02/2020
extra questions
1) characterstics of particles of matter
2) Define evaporation and write down Factors
affecting on it.
3) Properties of colloid solution:
4) short note & on
elements
5) write the Law of constant
proportion​

Answer 1

Answer:

Explanation:

1) The particles of matter are very, very small. The particles of matter have space between them. The particles of matter are constantly moving. The particles of matter attract each other.

2)Factors that affect evaporation include the concentration of the evaporating substances in air, temperature, air pressure, the rate of airflow and surface area. evaporation occurs on the surface of a liquid as it changes into the gaseous phase.

3)Physical Properties of Colloidal Solutions

Stability: Colloids are relatively stable in nature. The particles of the dispersed phase are in a state of continuous motion and remain suspended in the solution. Filter ability: Colloids require specialized filters known as ultra filters for filtration.

4)Definition of Element.  An element is a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element's atoms have the same atomic number. Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions.

5)The law of constant proportions states that chemical compounds are made up of elements that are present in a fixed ratio by mass. This implies that any pure sample of a compound, no matter the source, will always consist of the same elements that are present in the same ratio by mass

Answer 2

Characteristics of particles of Matter:

The important characteristics of particles of matter are the following:

1. The particles of matter are very, very small.
2. The particles of matter have space between them.
3. The particles of matter are constantly moving.
4. The particles of matter attract each others.

evaporation and facters affecting it

The process of a liquid changing into vapour (or gas) even its boiling point is called evaporation.

factors affecting

• wind speed
• surface area
• humidity
• temperature

properties of colliod solution

• A colloid is a heterogeneous mixture.
• the size of the particles are so small to be individually seen by naked eyes.
• Colloids are big enough to scatter a beam of light passing through it and make it's path visible.
• They do not settle down when left undisturbed, that is, a colloid is stable.

elements

An element is a substance whose atoms all have the same number of protons: another way of saying this is that all of a particular element's atoms have the same atomic number.

law of constant proportions

The law of constant proportions states that chemical compounds are made up of elements that are present in a fixed ratio by mass. This implies that any pure sample of a compound, no matter the source, will always consist of the same elements that are present in the same ratio by mass.

For example, pure water will always contain hydrogen and oxygen in a fixed mass ratio (a gram of water consists of approximately 0.11 grams of hydrogen and 0.88 grams of oxygen, the ratio is 1:8).

hope it helps u

plz mark it as brainliest