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true or false
1./
2. Red litmus paper turns blue when place into acidic substances.
3. The acidity of a solution is expressed in terms of hydroxyl ion.
4. Molecules are the smallest particle of an element.
5. Mixtures are composed of two or more elements chemically united.
6. Scientific method is a plan or a device used by the scientists in solving scientific problems. 7. Superstitious beliefs are beliefs that have scientific basis.
8. Nonmetals are often hard and have high densities.
9. Pure substances is a heterogeneous mixtures.
10. Variables are factor that are not used in testing a hypothesis.​


True Or False12 Red Litmus Paper Turns Blue When Place Into Acidic Substances3 The Acidity Of A Solution Is Expressed In Terms Of Hydroxyl Ion4 Molecules Are Th class=

Sagot :

1.true

2.true

3.false

4.true

5.false

6.true

7.false

8.false

9.true

10.true

Explanation:

pa brainliest tama po to