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Physical Science Facts

Physical Science

A collection of factual questions regarding physical science history and constants.

physics chemistry science-history

15 Questions Easy Ages 10+ Sep 5, 2026

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About this Study Set

This study set covers Physical Science through 15 practice questions. A collection of factual questions regarding physical science history and constants. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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1 In what year did Albert Einstein publish his paper on the mass-energy equivalence formula, E=mc²?

A 1905
B 1912
C 1920
D 1935

2 How many states of matter are traditionally taught as the most common in introductory science?

3 What is the atomic number of the element Hydrogen?

4 Approximately how many degrees Celsius is the freezing point of pure water at sea level?

A -10
B 0
C 10
D 32

5 Who is credited with discovering the electron in 1897?

A Isaac Newton
B J.J. Thomson
C Marie Curie
D Niels Bohr

6 How many planets in our solar system have been officially recognized since the 2006 reclassification?

A 7
B 8
C 9
D 10

7 What is the approximate speed of light in a vacuum in meters per second?

A 300,000
B 3,000,000
C 30,000,000
D 300,000,000

8 In which century did Isaac Newton publish his 'Philosophiae Naturalis Principia Mathematica'?

A 15th
B 16th
C 17th
D 18th

9 What is the approximate pH value of pure water at 25 degrees Celsius?

A 5
B 7
C 9
D 11

10 How many laws of motion did Isaac Newton define in his 1687 publication?

11 What is the chemical symbol for the element Gold?

A Gd
B Au
C Ag
D Go

12 Which planet is located third from the Sun?

A Venus
B Mars
C Earth
D Mercury

13 How many elements were in the first version of the Periodic Table published by Dmitri Mendeleev in 1869?

A 63
B 82
C 104
D 118

14 At what temperature in degrees Celsius does water typically boil at sea level?

A 50
B 75
C 100
D 150

15 How many colors are traditionally identified in the visible light spectrum?

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