Salt as a compound does not truly exist in the ocean. Indicate whether the statement is true or false
ANS: T
The components of salt are separated when they dissolve in water. There is sodium and chloride ions
present in abundance in the ocean, but not the compound itself. The ions are pulled apart because
water is a polar molecule. Information can be found in the section Water Is a Powerful Solvent.
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Warm air rises. This is an example of energy transfer by
A) convection. B) conduction. C) radiation.
What is the particular significance of valence electrons?
a. Unlike electrons in other shells, valence electrons have no charge. b. Valence electrons always balance the charge produced within the nucleus. c. The number of valence electrons is the atomic number for that element. d. Valence electrons form chemical bonds between atoms by being transferred or shared. e. The number of valence electrons defines the type of element.
What are terraces and what do they tell us about the past?
What will be an ideal response?
Which of the following is true of the lagging strand?
A) It is produced more rapidly than the leading strand. B) It is produced at the same rate as the leading strand. C) It is produced continuously. D) It is produced discontinuously.