CHILD DEVELOPMENT PEDAGOGY

GROWTH DEVELOPMENT CHILD

SUMMATIVE ASSESSMENT

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is a heterogeneous mixture?
A
oil and vinegar
B
milk
C
salt water
D
Coca Cola
Explanation: 

Detailed explanation-1: -Oil and vinegar are immiscible in each other, so their composition will not be uniform throughout the mixture. Since heterogeneous mixtures are those mixtures that are not uniform throughout the mixture, so oil and vinegar salad dressing will be a heterogeneous mixture.

Detailed explanation-2: -When oil and vinegar are mixed, they form a heterogeneous mixture with two layers, or phases. The oil phase floats on the water, or vinegar, phase. A heterogeneous mixture consists of two or more phases.

Detailed explanation-3: -Hence, oil in water is a heterogeneous mixture.

Detailed explanation-4: -Vinegar is an example of a homogeneous mixture, and not a pure substance since water, its solute, is dissolved in the solvent, being acetic acid. Homogeneous mixtures are also known as solutions, which are mostly composed of liquids (including vinegar), but can include gases.

Detailed explanation-5: -A vinaigrette is technically any sauce that contains oil and vinegar. The classification started with the great 19th-century chef Antonin Careme, who decided there were five basic “mother” sauces. Oil and vinegar was one of them. He called it a vinaigrette.

There is 1 question to complete.