13. Colloids are heterogeneous mixtures. Which of these mixtures is not a colloid?
A Soft drink B Shampoo C Mayonnaise D. Shaving cream
14. What is the phenomenon in particles in a colloid scatter the beams of light that are direct
at them?
A. Tyndall Effect
C Concentrated
B. Dispersion
D. Absorption
15. In construction sites, sand is mixed with cement and water to produce concrete. What kir
of mixture is concrete?
A. Solution B Colloid
C. Suspension D Emulsion
18. What is formed when two or more substances are combined?
A Pure Substance
B Mixture
C Matter
D Solid Matter
17. What mixture has a uniform composition and exist in single form?
A Homogeneous Mixture
C Matter
B Heterogeneous Mixture
D Pure Substance
18 What mixture has NO uniform composition and exist in two or more phases?
A Matter
C. Homogeneous Mixture
B. Pure Substance
B Heterogeneous Mixture
Answers
13 option B is correct
14 option A
15 option C
18 option B
13) A Soft drink , 14)A. Tyndall Effect ,15) B Colloid ,16) B Mixture ,17)A Homogeneous Mixture ,18)B Heterogeneous Mixture
Explanation:
13) A Soft drink
shampoo is a mixture made up of other materials, mayonnaise is a mixture made up of oil and egg, shaving is a mixture of different mixtures , while soft drink is a mixture of gas and liquid what combined, SOFT DRINK is not a colloid .
14)A. Tyndall Effect
The Tyndall effect causes light rays to appear through a window as they are scattered by a medium containing fine suspended particles, such as smoke or dust in a room.
15) B Colloid
Concrete is a heterogeneous mixture of aggregate, cement and water, along with some preforms and other additives that can be added to achieve certain properties. The proportions of these materials are selected in the concrete mix depending on the type of work required and the materials available.
16) B Mixture
A mixture is a system of matter consisting of two or more different substances that are mixed but not chemically bound. A mixture is understood as the physical combination of two or more substances, whose identity is maintained and mixed in the form of solutions, suspensions and colloids.
17)A Homogeneous Mixture
A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture. All solutions would be considered homogeneous.
18)B Heterogeneous Mixture
A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture. Vegetable soup is an uneven mix. A given spoonful of soup contains different amounts and different components of the soup