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It is the user of the analytical methods and instruments developed by the analytical chemists to yield reliable and true results, if clearly given instructions are properly followed.

• Scientist

• Analyst

• Expert

• Chemist

Answer explanation

An analytical chemist may carry out fundamental laboratory research, work in marketing and law, develop processes and products, educate, and design tools for analytical analysis. Performing qualitative and quantitative analysis are typical job duties.

What are the two sub-branches under analytical chemistry that are the backbone of many educational labs?

• Qualilative and Quantitative

• Qualification and Quantitative

• Quantitative and Qualitative

• Quantitative and Quantification

Answer explanation

A qualitative examination is an information about the atomic or molecular species or functional groups in the sample (answers the question "what?"). Quantitative analysis is an information expressed as numbers indicating the proportional amounts of one or more of these components (how much).

What branch of chemistry in involves the application of range of techniques and methodologies to obtain and assess qualitative, quantitative and structural information on the nature of matter?

• Organic Chemistry

• Electrochemistry

• Inorganic Chemistry

• Analytical Chemistry

Answer explanation

Methods utilized for the detection, identification, characterisation, and quantification of chemical substances are referred to as analytical chemistry techniques. These techniques are frequently used in biology for pharmaceutical product research, development, and quality control.

What is a type of mixture used in collecting the samples, and these are the easiest type of samples to prepare due to their stable composition?

• Homogeneous

• Heterogeneous

• Composite

• Bulk

Answer explanation

A mixture is said to be homogenous if its composition is constant throughout. Because the dissolved salt is evenly distributed throughout the whole salt water sample, the salt water described above is homogenous.

In dissolving the sample, what is this commonly used material for organic samples that do not dissolve in water?

• Fusion

• Separation

• Masking

• Organic Solvent

Answer explanation

Organic solvents are chemicals with a carbon structure that can dissolve or disperse one or more other compounds. Organic solvents have the potential to be neurotoxins, genital poisons, and carcinogens. The organic solvents benzene, carbon tetrachloride, and trichloroethylene are carcinogenic.

Which of the following is not an area of which analytical chemistry is involved?

• establishing economic hazards

• diagnosing disease

• conducting research

• controlling quality

In collecting the samples, which of the following must be observed?

• The samples must be homogeneous.

• The essential laboratory sample should accurately represents the composition of all materials.

• Normal laboratory samples have a weight of more than 1 gram.

• Cost, time, equipment, and technical expertise must be considered.

Which of the following ways you can do in order to improve your confidence in the final results of your samples in the experiment?

• by increasing the number of replicate determinations

• by trusting your guts and avoid overthinking

• by drawing conclusions ahead of the experiment

• by praying hard ten times a day

Kimberly Jane wants to dissolve her samples. Which of the following materials or chemicals she won't be needing?

• water

• acids

• oxidizing acids

• telescope

Which of the following is not true about samples?

• In measuring samples, water are usually removed by drying for 2-5 hours.

• Some samples are not dry as they will be decomposed and its water content will be determined by analyzing other samples.

• The concentration of analyte is dependent on the size of the sample taken for the analysis.

• A gross sample is obtained by selecting random samples.