Question

1. Elements are substances that can be separated by chemical methods.
2. We use silver wires for making solar cells.)
3. Carbon monoxide is a neutral oxide.
5. Hydrogen gas burns in air with a 'pop' sound.
7. Magnesium hydroxide turns red litmus blue.
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Answer 1

Explanation:

Various separation techniques exist in order to separate matter, including include distillation, filtration, evaporation and chromatography. Matter can be in the same phase or in two different phases for this separation to take place.

Answer 2

Answer:

Elements can combine with otherelements to form compounds. Compounds are substancescomposed of two or more elements chemically combined that can be separated into simpler substancesonly by chemical means. Water, for example, is a compound because pure water is composed of only H2O molecules.