Quantitative Vs Qualitative Data
Periodic Table History & Trends
(Possible) Quiz Questions
Sig Figs
Average Atomic Mass
100

This type of data describes qualities or characteristics and is usually descriptive

Qualitative data 

100

This scientist is credited with creating the first widely recognized periodic table 

Dmitri Mendeleev 

100

The periodic table is arranged primarily by:

Atomic number (number of protons)
100

How many significant figures are in the number 1200 (with no decimal shown)?

2 significant figures (the trailing zeros are not significant without a decimal)

100

Isotopes differ in this amount of subatomic particles

The number of neutrons 

200

Quantitative data is always expressed in this form

Numerical form (numbers, measurements)

200

Elements in the same column or group of the periodic table share this common characteristic 

Same number of valence electrons and similar chemical properties 

200

What is the charge of a proton?

Positive

200

True or False: all nonzero digits are significant 

True 

200

True or False: Isotopes of the same element have the same number of protons

True

300

Name one example of qualitative data in a chemistry experiment 

Example: color change, texture, smell or appearance 

300

As you move from left to right across a period, the atomic radius generally does this: 

Decreases (atomic radius gets smaller)

300

The elements located in Group 18 are known as:

Noble gases

300

How many significant figures are in 0.00789?

3 significant figures 

300

Explain the difference between atomic mass and mass number.

Mass number is the total number of protons and neutrons in a single atom; atomic mass is the weighted average of all isotopes’ masses.

400

When measuring the temperature of a solution, this type of data is recorded

Quantitative data (e.g., temperature in C)

400

This trend describes the ability of an atom to attract electrons in a chemical bond 

Electronegativity 

400

What happens to the ionization energy as you move from left to right across a period on the periodic table?

It increases

400

True or False: If the digit to the right of the last significant figure is less than 5, do not round up.

True 

400

Why do isotopes of the same element have nearly identical chemical properties?

Because they have the same number of protons and electrons, which determine chemical behavior 

500

Explain why quantitative data is important for scientific experiments 

Quantitative data allows precise measurement and comparison, making experiments reproducible and results reliable.

500

Electronegativity generally _________ down a group and _________ across a period

Decreases; Increases

500

A student records that a liquid is "clear and colorless". This is an example of: 

Qualitative data

500

How many significant figures are in this number?: 60002

5 significant figures (zeros sandwiched between two sig figs are significant)

500

If an element has two isotopes, one with mass 35 amu (75% abundance) and one with mass 37 amu (25% abundance), what is its average atomic mass?

 (35×0.75)+(37×0.25)=26.25+9.25 = 35.5 amu