Question

1. In a chemical reaction ,the sum of the masses of the reactants and products remain

unchanged . This is called ____________

2. Formula of sodium carbonate is ______.

3. ______ & _____ are forms of complex tissue .

4. ________ gives flexibility in plants.

5. The product of mass & velocity is called _______.​

Answer 1

Answer:

1) law of conservation of mass

2)Na2CO3

3)xylem , phloem

4) collenchyma

5) momentum

Explanation:

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