Question

Q3. Classify the following as physical or chemical properties.  The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.  Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas.  Metallic sodium is soft enough to be cut with a knife.  Most metal oxides form alkalis on interacting with water.

Answer 1

Answer:

The composition of a sample of steel is : 98% iron, 1.5% carbon and 0.5% other elements. (b) Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas. (c) Metallic sodium is soft enough to be cut with a knife. (d) Most metal oxides form alkalis on interacting with water.

Explanation:

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