17 Questions
What type of energy is associated with the random movement of atoms and molecules?
Thermal energy
In what form is water less dense than in its liquid form?
Solid (ice)
What property of water makes it the universal solvent of life?
Ability to dissociate into ions
What condition is created by dissolved carbon dioxide in seawater that lowers the ocean's pH?
Ocean acidification
How do scientists refer to the search for extraterrestrial life related to water?
Astrobiological research
What is an element?
A substance that cannot be broken down into other substances by chemical means
Which of the following is a trace element?
Fluoride
What is the function of iodine in the human body?
Producing a hormone by the thyroid gland
What are the subatomic particles that make up an atom?
Proton, electron, neutron, nucleus
How many essential elements are needed in humans?
25
What happens when there is an iodine deficiency in the diet?
It causes the thyroid gland to grow abnormally (goiter)
What does the mass number/atomic mass of an element represent?
Total amount of protons and neutrons
Which statement is true about isotopes?
They have different numbers of protons and neutrons.
In a chemical bond, when one atom strips off an electron from another atom due to electronegativity, what type of bond is formed?
Ionic bond
What is the main role of electrons in chemical activity within an atom?
Participating in chemical reactions
Which type of bond involves attractions between atoms and is weaker compared to covalent or ionic bonds?
Hydrogen bond
What property of water is described as the tendency of water molecules to stick together?
Cohesion
Test your knowledge on elements, atoms, compounds, and the chemical basis of life with this quiz based on lectures by Leslie Mae C. Bayona, MSc. Explore the fundamentals of matter, elements, compounds, and their properties.
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