1. you can measure mass, volume, temperature of substances.
2. there are many tools can be used in.chemistry, such as flask, tube, thermometer, pippette etc.
3. pure substance means the substance consist of 1 element only.
4. mixture means the substance is made up of more than 1 element.
5.compound is substance that is made up of more than 1 subtsance chemically.
6. for the comparison of mixture and compound can be seen in textbook.
7. there are 3 states of matter. they are solid, liquid and gas.
8. for particle arrangement can be seen in textbook.
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