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13 Cards in this Set

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Saturated Fat

A lipid made from fatty acids that have no double bonds between carbon atoms.

Physical Change

A change that offers the appearance but not the chemical makeup of a substance.

Model

An explanation or representation of something that can not be seen.

Isomers

Two different molecules that have the same chemical formula.

A student reports on an atom that has 11 protons, 10 neutrons, and 10 electrons. What is wrong with the student's report?

proton # = electron #

Two atoms have the same number of neutrons but different numbers of protons. Do they belong to the same element?

No

The element sulfur is comprised of all atoms that have 16 protons. How many neutrons are in sulfur -34?

18

How many total atoms are in one molecule of C22H44O?

67

Identify the following as an atom, element, or molecule?

a. P - element, b. N2 - molecule, c. oxygen - 16 - atom, d. PH3 - molecule

When you boil water, are you causing a chemical change or a physical change?

physical

Two solutions of different solute concentration are separated by a membrane. After 1 hour, the solutions are of equal concentrations and the water levels are the same as when the experiment started. Is this an example of diffusion or osmosis?

diffusion

In the following equation: C3H8 + 5O2 3CO2 + 4H2O Is CO2 a product or a reactant? How many molecules of it are involved in the reaction?

product, 3

What four things are necessary for photosynthesis?

water, light, carbon, & catalyst (usually chlorophyll)