Chemistry for Engineering (Module 1) (Part 2)

Question 1

How does Matter occur in nature?
(Also known as the Classifications of Matter)

Answer 1

Pure Substance
Mixture

Question 2

Matter having an invariant chemical composition and distinct properties

Answer 2

Pure Substances

Question 3

What are the 2 types of Pure Substances

Answer 3

Element
Compound

Question 4

It is consisted of two or more pure substances that retain their individual identities and can be separated by physical methods

Answer 4

Mixture

Question 5

What are the 2 types of Mixture

Answer 5

Homogeneous Mixture
Heterogeneous Mixture

Question 6

It is a Fundamental Substance, it cannot be separated into simpler substances by chemical methods

Answer 6

Element

Question 7

It is a Substance that is composed of two or more elements in fixed proportions, it can be separated into simpler substances and elements only by chemical methods

Answer 7

Compound

Question 8

It is a kind of mixture that has a uniform composition and properties throughout

Answer 8

Homogenous Mixture

Question 9

It is a mixture that is not uniform in composition and properties throughout

Answer 9

Heterogenous Mixture

Question 10

It is represented by chemical symbols

Answer 10

Elements

Question 11

It is formed when 2 or more different elements combine in definite proportions

Answer 11

Compounds

Question 12

A mixture that only has a Single Phase/One Phase

Answer 12

Homogenous Mixture

Question 13

A mixture that the particles or substance can still be identified

Answer 13

Heterogenous Mixture

Question 14

This law states that there is NO OBSERVABLE CHANGE in the quantity of matter during a chemical reaction or during a physical Change

Answer 14

Law of Conservation of Mass

Question 15

According to this law: ENERGY CANNOT BE CRESTED OR DESTROYED in a chemical reaction or in a physical change. It can ONLY BE CONVERTED FROM ONE FORM TO ANOTHER

Answer 15

Law of Conservation Of Energy

Question 16

What are the 14 Forms of Energy? (Give atleast 7)

Answer 16

Electrical
Thermal
Light
Green
Wave
Heat
Hydroelectric

Solar
Wind
Nuclear
Tidal
Biomass
Kinetic
Geothermal

Question 17

What are the two types of energy?

Answer 17

Potential Energy
Kinetic Energy

Question 18

It is a type of energy that is BASED ON POSITION, composition and structure

Answer 18

Potential Energy

Question 19

A type of Energy that is BASED ON MOTION of body and particles

Answer 19

Kinetic Energy

Question 20

What is the formula for Potential Energy?

Answer 20

P.E. = mgh

Question 21

What is the formula for Kinetic Energy?

Answer 21

K.E. = 1/2 mv squared

Question 22

The movement of heat across the border of the system due to a difference in temperature between the system and its surroundings.

Answer 22

Heat/Energy Transfer

Question 23

What are the 2 processes of Heat/Energy Transfer

Answer 23

Endothermic Process
Exothermic Process

Question 24

It is the process when Energy is absorbed

Answer 24

Endothermic

Question 25

It is the process where Energy is released

Answer 25

Exothermic Process

Question 26

The law that states that a pure compound will always have the same elements combined in the same proportion by mass

Answer 26

Law Of Definite Proportions

Question 27

The law that states that when two elements combine to form more than one compound the element whose mass varies combines with a fixed mass of the second element weights in a sample whole no. ratio

Answer 27

Law Of Multiple Proportions