it was a heterogenous mixture because the iron was in solid state and so was the sulfur
Copper Sulphate crystals before heating r blue....but after heating I dunno , may be u should try and ask your Sci.Miss/Sir I'll get back when I get the other answer .
Sulfur before being heated in the mixture weighs less and is less reactive than in the heated mixture.
A pure substance is a substance that consists solely of the same atoms/molecules.So a volume of water that contains only H2O is a pure substance. A block of iron that contains only Fe atoms is pure substance. A pure substance can be composed of atoms or molecules as I said before BUT they have to be exactly the same.A substance that has constant chemical composition and characteristics
The first day of summer...for 2011 the 21st /It's merely the longest day in terms of sunshine per day. In general all days are equally long because that's how we measure our timeline. However when the "longest sunny day of the year" occur is entirely depending on where you live on earth. longest sunshine would be if you lived as near the poles center as you can.
Ammonia, Nitrates, Nitrites.
Sodium chloride at room temperature is a crystalline transparent substance.
This is a thermal decomposition reaction: new compounds are obtained by heating.
It is impossible to tell how long from the start of the experiment it was before all of the substance turned into a liquid without more information about the experiment. Perform the experiment again and use a timer to determine the length of time required to turn the substance into a liquid through heating.
before
your scene of touch can help you tell how hot or cold an object is.
Copper Sulphate crystals before heating r blue....but after heating I dunno , may be u should try and ask your Sci.Miss/Sir I'll get back when I get the other answer .
It is essential that smears air-dry before heating. This is so that they do not move around and cause errors in observation.
Weigh mass before heating and weigh mass after heating. Before mass - after mass.
You are not so much as heating tubes but preventing unwanted microbes from "sneaking" into the culture. You are sterilizing the mouth of the tube before and after.
68.0 grams due to the law of conservation of mass which states that mass can not be lost but only converted.
You should air-dry a specimen before heating it in the labratory in order to get rid of any impurities. Also, it helps you record the best and most accurate figure while heating.
Dark green