Question

11. What does it indicate when a sugar is heated in a test tube until it is completely changed into a black mass and droplets of water? C. Mixture D. Solution B. Element
12. What substance is made by mixing two elements without being chemically combined? A. Compound B. Element C. Mixture D. Solution
13. What is the best way to use in separating iron parts from a mixture? A. Filter paper B. Magnet C. Water D. Spoon
14. Which of the followiog 11cs cvaporation as a means of separating the components of the green mixture? A. bron fillugs and sand C. Sand ar.d gravel B. Pebbles and water D. Sugar and mater 15. Which of the following statements Histinguishes pure substances from mixturca? A. Can be sepacatod by physical means. H. Consists of two or morc kinds of matter. V. Hans 20 specifr solubility and densities D. Hare constant bohrg temperature and mclting temperature,

Can you please help me? ​

Answer 1

The correct answers to these questions on solutions, elements, and compounds are provided below:

• 11. D. Solution

• 12. C. Mixture

• 13. B. Magnet

• 14. D. Sugar and water

• 15. D. Have constant boiling temperature and melting temperature

A solution is a sort of homogenous mixture whereby a solute is dissolved in a solvent. A mixture refers to two or more substances that are not chemically combined.

In a mixture of two substances with iron as a constituent, a magnet can be used for separation purposes.

A pure substance has just an element or compound whose boiling and melting temperature is constant.

This is unlike a mixture that boils and melts over a range of temperatures.

Conclusively, the above bullet answers are the separation techniques and states of matter.

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