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Aryan · 2024-04-08T07:57:18.995Z

Elements, compounds and mixtures • All substances can be classified into one of these three types Element • A substance made of atoms that all contain the same number of protons and cannot be split into anything simpler • There are 118 elements found in the Periodic Table Compound • A pure substance made up of two or more elements chemically combined • There is an unlimited number of compounds • Compounds cannot be separated into their elements by physical means • E.g. copper(II) sulfate (CuSO4), calcium carbonate (CaCO3), carbon dioxide (CO2) Mixture • A combination of two or more substances (elements and/or compounds) that are not chemically combined • Mixtures can be separated by physical methods such as filtration or evaporation • E.g. sand and water, oil and water, sulfur powder and iron filings

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Aryan

Apr 08

Elements, Compounds & Mixtures

in Aryan

Elements, compounds and mixtures

All substances can be classified into one of these three types

Element

A substance made of atoms that all contain the same number of protons and cannot be split into anything simpler
There are 118 elements found in the Periodic Table

Compound

A pure substance made up of two or more elements chemically combined
There is an unlimited number of compounds
Compounds cannot be separated into their elements by physical means
E.g. copper(II) sulfate (CuSO4), calcium carbonate (CaCO3), carbon dioxide (CO2)

Mixture

A combination of two or more substances (elements and/or compounds) that are not chemically combined
Mixtures can be separated by physical methods such as filtration or evaporation
E.g. sand and water, oil and water, sulfur powder and iron filings

2 comments

Comments (2)

Sreeshan

Apr 09

No	Action	A	A1	A2	A3	A4
01	Updates as per my time table, reply for the comments for you	*	*	*	*	*
02	Post a topic based on your text book	*	*	*	*	*
03	Answered all questions on my posts till the previous date.	*	*	*	*	*
04	English daily woks	*	*	*	*	*
05	Reduce device time in to half an hour in a day (Phone calls, TV, youtube, sports videos, whatsapp, insta, FB etc). Phone should be keep with parents / grandparents		*	*	*	*
06	Involving in cleaning and mopping at Uyir in the morning Or Keep Uyir space clean and beautiful throughout the day.		*	*	*	*
07	Follow health and hygiene rules		*	*	*	*
08	Complete 3 personal responsibilities mentioned by parents			*	*	*
09	Support other children or help in their learning at least 20 minutes in a day			*	*	*
10	Find time to do more research on your passionate area. ( need extra post other than the subject post)				*	*
11	70 % and above marks attain any exam.					*