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What happens when Magnesium ribbon is burnt in air?If the product obtained is mexed with water,then what is the nature os that aqueous solution.
i want 20 physical changes and 20 chemical changes
Breaking of glass is a physical change or chemical change ?
list some chemical compounds and their chemical formulas which we use in our daily life????
Describe two changes that are harmful. Explain why you consider them harmful .How can you prevent them ?
formation of clouds is a physical change explain
write difference between physical and chemical change
why should we not put staniless steel spoon in pickle jars?
WHEN BAKING SODA IS MIXED WITH LEMON JUICE , BUBBLES ARE FORMED WITH THE EVOLUTION OF GAS . WHAT TYPE OF CHANGE IS IT? EXPLAIN
c is the symbol of carbon.what else does it represent?
When a soda water bottle is opened, a gas is released. Does a chemical reaction occur?
valency of aluminium in Al2(SO4)3
What type of change is- growth of plants? (physical/chemical) Explain.
Balance the equation-
Fe + O2 + H2O ---->Fe2O3
Making of curd from milk is a physical change.How?
in which city do you expect rusting to be a greater problem-in delhi or in mumbai ?why?
misuse of science ? uses of science ? advantages and disadvantages of science
Burning of candle involves both physical and chemical changes. Explain.
WHY ARE VENTILATORS MADE CLOSE TO CEILINGS?
the process of depositing a layer of zinc on iron is called ?
what is CuSO4+Fe=?
what is the chemical equation for baking soda+vinegar...
WHY DO WHALES AND DOLPHINS KEEP COMING UP TO THE WATER SURFACE?
what is rusting?
baking soda is mixed with lemon juice,
bubbles are formed with the evolution of a gas. What type of change
is it? Explain.
Is boiling of rice a chemical change or physical ?
is breathing physical or chemical change ?
justify the statement that physical changes can be reversible as well as irreversible?
What is the atomicity of magnesium
why is rust formed on iron ?
Explain how painting of an iron gate prevents it from rusting.
difference between atom and molecule
What do you mean by distilled water?
Is galvanization a chemical or phisical change?
Curdling of milk is an irreversible change
Breaking down of ozone is a physical or chemical change?Why ??? (EXPLAIN)
why are physical change and chemical change important ???????????
Why is Stainless Steel preferred to make utensils?
What are physical changes? Give 5 examples.
very short note on rusting of iron
melting of polar ice caps is physical change or chemical change
Why do ships suffer a lot of damage from rusting in spite of being painted ? Experts plz send the quick as possible becoz I have science exam tommorow plz quick !!!!!
eruption of volcano is a chemical change.
is it true or false
When a bulb is switched on, it gives out light and heat. Is it a chemical change or a physical change? Why?
Growing of a baby . Is physical or chemical change
how would justify rusting as a chemical change?
how to balance Ca3(PO4)2 +H2SO4=CaSO4+Ca(H2PO4)3
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