|. true or false
1. a mixtures has only one set of physical and chemical properties.
2. elements and compounds can be separate by physical means.
3. a compound is a formed when atoms of two or more different elements combine chemically in the same fixed proportion by mass.
4. the composition of a pure substance is always the same regardless of it's source.
1. a mixtures has only one set of physical and chemical properties.
2. elements and compounds can be separate by physical means.
3. a compound is a formed when atoms of two or more different elements combine chemically in the same fixed proportion by mass.
4. the composition of a pure substance is always the same regardless of it's source.
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Answer:
1.true
2.false
3.true
4.true
Explanation:
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