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21 Cards in this Set

  • Front
  • Back

Saturated fat

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

Physical change

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


An explanation or representation of something that cannot be seen


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?

An atom must have the same number of protons and electrons

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

No, Atoms of the same element must have the same number of protons(also electrons).

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

There must be 18 neutrons. (16 protons plus 18 neutrons = 34

What are the 4 things necessary for photosynthesis?

Carbon dioxide, water, energy from the sun, and a catalyst

P (element or molecule)


N2 (element or molecule)


oxygen-16 (element or molecule)


PH3 (molecule or atom)


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

Physical All phase changes are physical

Two solutions of different solute concentrate are separated by a membrane. After 1 hour, the solutions are of equal concentrations. The water level are the same as when you started. Diffusion or osmosis?


In the following carbohydrate, what is the value of x? C7HxO2

x=4 (remember in a carbohydrate the ratio of H/O must be the same as water 2/1)

Solution with pH of 1.5 (acidic or alkaline)


Solution with a pH of 7.1 (acidic or alkaline)


Solution with a pH of 13.2 (acidic or alkaline)


What determines the properties of a protein?

type, number, and order of amino acids linked together

What part of the neucleotide is responsible for the way DNA stores its information?

The nucleotide's base is what determines the "Morse code" of DNA

What holds the two helixes in DNA together?

Hydrogen bonding between the bases holds DNA's double helix together