Adding a Small Amount of Water to a Substance Increase

question 40

Multiple Choice

Adding a small amount of water to a substance increase its cohesion; whereas,adding a lot of water decreases its cohesion.Why?

• A) A small amount of water decreases surface tension,allowing the grains to bond together,whereas too much water will increase surface tension and force the grains away from each other.
• B) A small amount of water increases surface tension and holds the grain together.Too much water between the grains will eliminate surface tension.
• C) Water has a small electrostatic force that disrupts the gravitational attraction of the grains and forces them to move away from each other.
• D) A small amount of water will precipitate cement into the pores of the material,whereas too much water will not allow that cement to form.

Learn the competencies required by social workers as outlined in the Educational Policy and Accreditation Standards.

Identify the different levels of social work practice and the focus at each level.

Grasp the importance of evidence-based and empirically based practices in social work.

Understand the concept of systems in social work and the importance of engaging in practice-informed research and research-informed practice.

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Definitions:

Atomic Open Sentence

A type of statement that contains one or more variables, which makes it capable of being true or false depending on the values of these variables.

Truth-functional Compound

A complex proposition whose truth value depends solely on the truth value of its components, determined by specific truth-functional operators.

Quantifier

A logical term denoting the number of instances an entity, such as 'all', 'some', or 'none'.

Atomic Open Sentence

A type of open sentence in logic that contains no logical connectives and involves variables that can make the sentence true or false depending on their values.