Q1.
Differentiate between
a) Compound and mixture
b. Homogeneous and heterogeneous mixture
c. Solution, colloids and suspension
d. Sol, emulsion and fog
Q2
State law of conservation of Momentum
Q3
State Newton's law of motion with example.
Answers
Answer:
Q1
a) Compound are substances which can be formed by chemically combining two or more elements. Mixtures are substances that are formed by physically mixing two or more substances. Compounds can be of three types, which are: covalent compounds, metallic compounds and ionic compounds
b) A homogenous mixture is that mixture in which the components mix with each other and its composition is uniform throughout the solution. A heterogenous mixture is that mixture in which the composition is not uniform throughout and different components are observed.
c) A colloid is a heterogeneous mixture whose particle size is intermediate between those of a solution and a suspension. The dispersed particles are spread evenly throughout the dispersion medium, which can be a solid, liquid, or gas.
d) Smoke and fog both are aerosols but their dispersed phase is different. The dispersed phase in fog is liquid (water droplets) whereas the dispersed phase in smoke is solid (particulate matter). Both fog and smoke have gas at the dispersion medium.
Q2 ) The law of momentum conservation can be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
Q3 ) Newton's third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction. ... For example, a book resting on a table applies a downward force equal to its weight on the table
Explanation:
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Answer:
A) COMPOUND:- A compound is a material composed of two or more components. Water, carbon dioxide and table salt are some examples of compounds.
MIXTURE:- A mixture is made when two or more substances are combined, but they are not combined chemically. General properties of a mixture: ● The components of a mixture can be easily separated. ● The components each keep their original properties. ● The proportion of the components is variable.
B)HOMOGENOUS:-A homogeneous mixture appears uniform, regardless of where you sample it. ... Examples of homogeneous mixtures include air, saline solution, most alloys, and bitumen. Examples of heterogeneous mixtures include sand, oil and water, and chicken noodle soup.
HETEROGENOUS:- Heterogeneous most generally means consisting of different, distinguishable parts or elements. The word is used in a more specific way in the context of chemistry to describe a mixture consisting of two or more different substances or the same substance in different phases of matter (such as ice and liquid water).
C) SOLUTION:- Solution, in chemistry, a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of solubility. The term solution is commonly applied to the liquid state of matter, but solutions of gases and solids are possible.
COLLOIDS:- A colloid is a mixture of one substance spread out evenly inside another substance. They can be in two different phases or states of matter. One substance is the dispersion medium, such as water or gas. ... Definition: A colloid is a substance microscopically dispersed evenly throughout another substance.
SUSPENSION:- A suspension is a heterogeneous mixture of a finely distributed solid in a liquid. The solid is not dissolved in the liquid, as is the case with a mixture of salt and water.
D)SOL:- Sol, in physical chemistry, a colloid (aggregate of very fine particles dispersed in a continuous medium) in which the particles are solid and the dispersion medium is fluid. If the dispersion medium is water, the colloid may be called a hydrosol; and if air, an aerosol.
EMULSION:-An emulsion is a type of colloid formed by combining two liquids that normally don't mix. In an emulsion, one liquid contains a dispersion of the other liquid. Common examples of emulsions include egg yolk, butter, and mayonnaise. The process of mixing liquids to form an emulsion is called emulsification.
FOG:-Fog is a meteorological phenomenon when the clouds are getting thick. It may appear on land or sea and it usually lowers visibility (makes it hard to see very far). When fog forms at high levels it creates a cloud called stratus. ... Fog is made up of tiny water droplets or, in very cold conditions, ice crystals.
Q2)The law of momentum conservation can be stated as follows. For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.
Q3)Newton's third law states that when two bodies interact, they apply forces to one another that are equal in magnitude and opposite in direction. The third law is also known as the law of action and reaction. ... For example, a book resting on a table applies a downward force equal to its weight on the table.
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