Analytical Chemistry Methods Quiz

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Questions and Answers

Which method involves the measurement of the amount of substance in a sample?

Classical Method (correct)
Instrumental Method
Quantitative Analysis
Qualitative Analysis

Qualitative analysis provides information about the identity of chemical species present in a sample.

True (A)

What is the atomic number (Z)?

It is the number of protons inside the nucleus.

The _____ method involves the measurement of solids to determine substance concentration.

Gravimetric Signup and view all the answers

Match the following analytical methods with their descriptions:

Volumetric Method = Involves measuring the volume of a solution to determine concentration Gravimetric Method = Involves measuring a sample's mass to find its concentration Modern Instrumental Method = Utilizes advanced instruments for analysis Classical Method = Traditional techniques for chemical analysis Signup and view all the answers

What does the atomic number (Z) represent?

The number of protons in the nucleus (A) Signup and view all the answers

Protons and neutrons are found in the nucleus of an atom.

True (A) Signup and view all the answers

What is the mass number if an atom has 8 protons and 8 neutrons?

16 Signup and view all the answers

The formula to calculate the number of neutrons is A − Z, where A is the mass number and Z is the atomic number. For A = 16 and Z = 8, the number of neutrons is _____.

8 Signup and view all the answers

Match the following particles with their characteristics:

Protons = Positively charged particles in the nucleus Neutrons = Neutral particles in the nucleus Electrons = Negatively charged particles that orbit the nucleus Nucleus = Central part of the atom containing protons and neutrons Signup and view all the answers

Flashcards

Quantitative Analysis

Determining the amount of a substance in a sample.

Qualitative Analysis

Identifying the components of a sample.