Long Test Answer Key

Characteristic of science that talks about the correctness of a statement.

• Precision

• Accuracy

• Objectives

• Reliability

Answer explanation

ACCURACY

- •Correctness of statement

Which of the following is an example of identifying a problem?

• Every day severe cases are increasing daily

• Identifying the type of virus present

• Conducting clinical trials

• People having the COVID-19 vaccine can acquire herd immunity.

Answer explanation

Problem: Every day severe cases are increasing daily

Background Research:    Identifying the type of virus present

Experimentation: Conducting clinical trials

Analyzing the Data: People having the COVID-19 vaccine can acquire herd immunity.

A type of hypothesis that states no relationship between variables.

• Hypothetical Hypothesis

• Falsified Hypothesis

• Null Hypothesis

• Not true Hypothesis

Answer explanation

Null Hypothesis (H_o):

Hypothesis that states no relationship between variables.

Example:

The dosage of vaccine is not effective in lessening the severe cases of COVID-19

This is the scattering of light by the particle in a color or suspension.

• Tidal Effect

• Tydall Effect

• Tyndall Effect

• Tynndall Effect

Which of the following statements can be considered in preparing dilution?

• Add solute and Add solvent

• Reduce the solvent and

  Reduce solute

• Add solute and

  Reduce solute

• Add solvent and Reduce solute

The term science came from the Greek word, “Scientia” meaning knowledge.

• T

• F

Answer explanation

The term science came from the LATIN word, “Scientia” meaning knowledge.

Pure substance does not have fixed chemical composition.

• T

• F

A solution is considered to be concentrated if the appearance is dark in color.

• T

• F

Filtration is the separation technique used in separating oil and water.

• T

• F

Answer explanation

Decantation: Fast means of separating liquid from heavier solid particles.

Filtration: This can be done with the aid of filter paper which helps separate solid materials from liquid materials.

Formulation of medicine is one of the application of substances and mixtures.

• T

• F