Experimental techniques and chemical alisis
Experimental Techniques;
Experimental techniques are the methods scientists use to do experiments and learn about substances.
Examples:
Heating – to see how a substance changes
Cooling – to observe solid or liquid formation
Mixing – to check if substances react
Filtering – to separate solid from liquid
Measuring – using balance, thermometer, or measuring jar
Why are they important?
To perform experiments safely
To observe changes carefully
To get correct results
Chemical Analysis:
Chemical analysis means finding out what a substance is made of and its properties.
Types of chemical analysis:
Colour test – change in colour shows a chemical change
Smell test – helps identify substances (done safely)
Solubility test – checks if a substance dissolves in water
Reaction test – mixing substances to see reactions
Why is chemical analysis important?
To identify unknown substances
To check purity
To understand chemical reactions
Main Points :
Experimental techniques = ways to do experiments
Chemical analysis = study of substances
Both help scientists understand matter better
Fun Fact:
Scientists use special techniques to test water, food, and medicines to make sure they are safe for us!