We close in door bcoz to in come oxygen we use to breathe in

We use glass tools because it is the most important

1. 466uy466uyh

Hi Nikusuma my friend

Up is the stage of improvement

Hi Ciara , Nothing is up or down

mallable is the ability of a metal to be harmed into thin sheets
ductile is the ability of a metal to be streched into wires
brittle is the ability of a metal to be unbreakable

Malleable can be hammered into shin sheet
Ductile can be stretched into wire
Brittle have shine sirface

Malleability->ability to be hammered or forced into a thin sheet
Ductility->ability to be pressed into wires

fuel is a subustance in which when heated tend to produce heat and light

energy is the ability to do work

Fuel is something that produce fire and energy
While energy is the ability or capacity of doing work

mercury is a metal that contains oxygen rich compounds[im not sure tho]

What's bonding?

is a metal which is only liquid at room temperature its symbol is (Hg)

Is the liquid metal

We are fine

Thanks for mentioning me,you too dear friend

air isn't chemically combined but its physically combined

Air is a mixture and a compound because gases in it are not chemically combined and can be separated

Air is a mixture and not compound because
Gases in air can't be separated by chemical means and gases can be seen separated

The basic structure of an atom includes a tiny, relatively massive nucleus, containing at least one proton and usually one or more neutrons. Outside of the nucleus are energy levels (also called shells), which contain one or more electrons.

well said frank

it is not possible to collect hydrogen by pop sound but it is possible to determine it by a pop sound when a glowing splint is put into it

By what???

Is unsaturated hydrocarbon which has double bond

is unsatureted hydrocarbon with double bond

Is an unsaturated hydrocarbon which has double bond

Pp

You said that importance of study biology and your title is introduction to chemistry please be serious

IMPACTS SCIENTIFIC SKILLS SUCH AS MEASURING, RECORDING ,ANALYSING DATA ETC
ENABLES ONE TO UNDERSTAND THE STRUCTURE AND THE FUNCTIONING OF THE HUMAN BODY PARTS
IT IS A CAREER SUBJECT HENCE ENABLES ONE TO STUDY MEDICINE HORTICULTURE AGRICULTURE VETINARY DOCTOR

its up to you

mamb

I am levy I have not happy today because our president Mkapa is dead

How do you know if we are going back to school?

Yeah,am happy you know I miss my mathematics teacher very much

fractional distilation involves strongly heating of two liquids for the purpuse of separating them
but destructive distilation is the decomposition of a substance, as wood or coal, by heating with a minimal exposure to air,

Oh ,distructive distillation is used to separate liguids containing dissolved substances

How about destructive distillation?

Fractional distillation involve heating two liguid which have same or nearly boiling points

organic chemistry is
* used in making pvc
*used in making flouro chloro carbons

water is not added into acids becouse it may explode

I can say in this language that an acid is a water lover that's why when you add water to an acid suddenly it react forward in water

That's why we're required to ad an acid to the water but not water to an acid

Iweke vzur iyoo

Is the loss of soil fertility, and productivity

let's chat guys

Yeah

yes I am on

organic chemistry,soil chemistry,bio chemistry,inorganic chemistry,organic chemistry

I think those are the correct one in my side[BUT YEAH]

guys what about?
biochemistry
inogarnic chemistry &
orgarnic chemistry

And what about analytical chemistry?

most reactive metals= electrolysis
moderate reactive= reduction
less reactive= chemical reactions

Reduction
Purification
Concentration
Roasting

I think...
1)Mining and crashing
2)concentration of the ores
3)Roasting or calcination
4)reduction of oxides from metals
5)purification of metals

true on what henry macharia has talked about

correct

Bonding is when two or more atoms combine chemically and an attractive force exists btn the atoms
Nomenclature is the naming system of organic compounds