1. A. medium
2. B. matter
3. B. straight lines
im sorry i couldnt help for number 4 but hope this helps
Answer:
B please give me brainlyest
Explanation:
The correct answer is option (c) i.e. Energy will be converted into another form.
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During a chemical reaction, energy remains unchanged, It just gets converted into another form and doesn’t increases or decreases. Excess energy is released in the form of heat, light during a chemical reaction and thus, proving the law of conservation of energy which says, energy can neither be created nor destroyed. It just gets converted from one form to another form. </span>