Podcast
Questions and Answers
What type of energy is associated with the random movement of atoms and molecules?
What type of energy is associated with the random movement of atoms and molecules?
- Electrical energy
- Thermal energy (correct)
- Chemical energy
- Mechanical energy
In what form is water less dense than in its liquid form?
In what form is water less dense than in its liquid form?
- Gas (water vapor)
- Plasma
- Solid (ice) (correct)
- Supercooled liquid
What property of water makes it the universal solvent of life?
What property of water makes it the universal solvent of life?
- High boiling point
- Low heat capacity
- High surface tension
- Ability to dissociate into ions (correct)
What condition is created by dissolved carbon dioxide in seawater that lowers the ocean's pH?
What condition is created by dissolved carbon dioxide in seawater that lowers the ocean's pH?
How do scientists refer to the search for extraterrestrial life related to water?
How do scientists refer to the search for extraterrestrial life related to water?
What is an element?
What is an element?
Which of the following is a trace element?
Which of the following is a trace element?
What is the function of iodine in the human body?
What is the function of iodine in the human body?
What are the subatomic particles that make up an atom?
What are the subatomic particles that make up an atom?
How many essential elements are needed in humans?
How many essential elements are needed in humans?
What happens when there is an iodine deficiency in the diet?
What happens when there is an iodine deficiency in the diet?
What does the mass number/atomic mass of an element represent?
What does the mass number/atomic mass of an element represent?
Which statement is true about isotopes?
Which statement is true about isotopes?
In a chemical bond, when one atom strips off an electron from another atom due to electronegativity, what type of bond is formed?
In a chemical bond, when one atom strips off an electron from another atom due to electronegativity, what type of bond is formed?
What is the main role of electrons in chemical activity within an atom?
What is the main role of electrons in chemical activity within an atom?
Which type of bond involves attractions between atoms and is weaker compared to covalent or ionic bonds?
Which type of bond involves attractions between atoms and is weaker compared to covalent or ionic bonds?
What property of water is described as the tendency of water molecules to stick together?
What property of water is described as the tendency of water molecules to stick together?
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