Question

WHO WILL ANSWER FIRST 1 FOLLOW, THANK AND BRAINLIST. PLZ MAKE A COREECT ANSWER AND ANSWER ANY 4 QUESTIONS


IF YOU DON'T KNOW WHAT THE ANSWER JUST LEAVE IT PLZ





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Answer 1

Answer:

• first answer see on attached..
• second answer also in attached
• third one also attached
• The distance between the two stations is 240 km. A train takes 4 hours to cover this distance. Calculate the speed of the train.
• Solution:
• Speed = (Distance travelled) / (Time)
• = (240 km) / (4h) = 60 Km/h
• Therefore the speed of the train is 60km/hr.
• Chemical Changes : The wax near flame burns and gives new substances like carbon dioxide, carbon soot, water vapour, heat and light. LPG is another example of a familiar process in which both the chemical and physical changes take place.
• matter
• anything that has mass and takes up space
• mass
• the amount of matter the object contains
• substance
• matter that has a uniform and definite composition
• physical property
• a quality or condition of a substance that can be observed or measured without changing the substances composition.
• Examples: color, solubility, odor, hardness, density, melting point, and boiling point.
• solid
• is matter that has a definite shape or and volume
• liquid
• a form of matter that flows, has a fixed volume, and takes the shape of its container
• gas
• a form of matter that takes both the shape and volume of its container (gases are also easily compressed)
• vapor
• describes the gaseous state of a substance that is generally a liquid or solid at room temperature.
• physical change
• a change which alters a given material without changing its composition.

I hope it is helpful to you dear mate ✍✍

keep learning

Answer 2

Answer:

btw is this oliver

have a great day

sorry not for points