10 Questions
What is the definition of an element?
A substance that cannot be broken down to other substances by chemical reactions
What do trace elements refer to?
Elements required by an organism in minute quantities
In an ionic bond, what happens between two atoms?
One atom strips an electron away from the other
What is the definition of atomic mass?
The total mass of an atom, which is the sum of protons and neutrons
What does the term isotopes refer to?
Atoms that share the same atomic number but different mass numbers
What is the main difference between hydrogen bonds and van der Waals forces?
Hydrogen bonds involve a partial positive hydrogen and a partial negative EN atom, while van der Waals forces involve instantaneous dipoles due to moving electrons.
How does molecular shape impact biological molecules' interactions?
Molecular shape affects how biological molecules recognize and respond to each other with specificity.
What is the role of cohesive properties of water in plants?
Cohesion allows water to flow uphill in plants against gravity.
In chemical equilibrium, what remains constant?
Reactants and products remain constant in concentration.
How do the emergent properties of water contribute to Earth's suitability for life?
Water's cohesion and adhesion properties support ecosystems by allowing transport of nutrients against gravity.
Explore the basic concepts of matter, elements, compounds, and the elements essential for life. Understand the properties of elements based on the structure of their atoms.
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