Foundations of Chemistry

Chemistry

Test your knowledge of basic chemical principles, atomic structure, and the periodic table aligned with high school curriculum standards.

science atoms periodic table

15 Questions Easy Ages 13+ Apr 7, 2026

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About this Study Set

This study set covers Chemistry through 15 practice questions. Test your knowledge of basic chemical principles, atomic structure, and the periodic table aligned with high school curriculum standards. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

Questions & Answers

Browse all 15 questions from the Foundations of Chemistry study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the dense, central region of an atom called?

A Electron cloud
B Nucleus
C Orbit
D Neutron star

2 Which subatomic particle carries a negative electric charge?

A Proton
B Neutron
C Electron
D Positron

3 What is the pH level of a neutral substance, such as pure water at 25°C?

A 0
B 1
C 7
D 14

4 Which element is represented by the chemical symbol 'Fe'?

A Fluorine
B Iron
C Francium
D Fermium

5 Which type of chemical bond involves the sharing of electron pairs between atoms?

A Ionic bond
B Covalent bond
C Hydrogen bond
D Metallic bond

6 What is the most abundant gas in Earth's atmosphere?

A Oxygen
B Carbon Dioxide
C Hydrogen
D Nitrogen

7 Which state of matter has a definite volume but takes the shape of its container?

A Solid
B Liquid
C Gas
D Plasma

8 What is the atomic number of Carbon?

A 1
B 6
C 12
D 14

9 Which group of elements on the periodic table is known for being largely unreactive?

A Alkali Metals
B Halogens
C Noble Gases
D Transition Metals

10 What is the standard SI unit for the amount of a substance?

A Gram
B Liter
C Mole
D Pascal

11 Which process describes a solid changing directly into a gas without becoming a liquid?

A Evaporation
B Sublimation
C Condensation
D Melting

12 What is the name of the law stating that mass is neither created nor destroyed in a chemical reaction?

A Boyle's Law
B Law of Conservation of Mass
C Charles's Law
D Avogadro's Law

13 Which subatomic particle's quantity determines the identity of an element?

A Neutron
B Electron
C Proton
D Photon

14 What is the chemical formula for common table salt?

A H2O
B CO2
C NaCl
D CH4

15 What type of reaction releases energy, usually in the form of heat, to its surroundings?

A Endothermic
B Exothermic
C Decomposition
D Synthesis

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