Chemistry Review Questions Flashcards
What form of energy is the stimulus for vision?
Radiant energy
Which is not an example of the four major elements contributing to body mass, hydrogen, carbon, nitrogen, sodium, or oxygen?
Sodium
The mass number of an atom is?
the sum of its protons and neutrons
A deficiency in which element can be expected to reduce the hemoglobin content of the blood?
Fe (iron)
Which set of terms best describes a proton?
Postive charge, 1 amu, in the nucleus
The subatomic particles responsible for the chemical behavior of atoms ar?
Electrons
In the body, carbohydrates are stored in the form of ?
Glycogen
When a pair of elections is shared between two atoms, the bond formed is called?
A single covalent bond
Molecules formed when electrons are shared unequally are called?
Polar molecules (i.e. water)
Factors that accelerate the rate of chemical reactions are…
the presence of catalysts, increasing the temperature, and increasing the concentration of the reactants
Sodium chloride is an organic molecule, true or false?
False
What properties reflect water’s importance to living systems?
It’s polarity and solvent properties, it’s high heat capacity, its high heat of vaporization, and its chemical reactivity
Acids release hydroxyl ions when dissolved in water, true or false?
False, they release protons
Which chemical is composed of carbon, hydrogen, and oxygen in the proportion 1:2:1 and has a six-sided molecular shape?
A monosaccharide
