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Vocabulary
Fill in the blank
Atoms and their interactions
Water and diffusion
Life molecules
100
Center of an atom
What is nucleus
100
Atoms of two or more elements chemically combined together are ______________
What is compound
100
The simplest form of matter
What is an atom
100
Some substances move into cells by...
What is diffusion
100
The four elements that are in life molecules
What is carbon, hydrogen, nitrogen, and oxygen.
200
net movement of particles from an area of higher concentration to an area of lower concentration
What is diffusion
200
Carbon-12, carbon-13, and carbon-14 are _____________
What is isotopes
200
The type of bond where atoms share electrons
What is covalent bond
200
molecule with unequal distribution of charge
What is a polar molecule
200
The total number of atoms in a molecule of sucrose, C12H22O11 is...
What is 45
300
Protein that changes the rate of a chemical reaction
What is an enzyme
300
Glycogen is a _________________________
What is polysaccaride
300
If you had a base solution the pH is...
What is higher than 7
300
In a water molecule the __________ atom(s) has a slightly positive charge, while the __________ atom(s) has a slightly negative charge.
What is hydrogen; oxygen
300
The various enzymes in our bodies are
What is proteins
400
bond formed between amino acids
What is a peptide bond
400
Diffusion increases when temperature _______________
What is increase
400
A chlorine atoms becomes a chloride ion when it.....
What is gains an electron
400
Water dissolves many ionic and molecular compounds because of its....
What is polarity
400
The structural difference between saturated and unsaturated fats are...
What is saturated fats have NO double bonds and have all of their carbons filled with hydrogens
500
large molecules formed when many smaller molecules bond together
What is a polymer
500
Covalent bonding is between two __________ and hydrogen bonding is between two __________.
What is atoms; molecules
500
An atom of fluorine has 9 electrons. Its second energy level has _________ electrons
What is 7
500
When there is no difference in the concentration of a substance from one area to another...
What is dynamic equilibrium has been reached.
500
The smaller units that make up nucleic acids are...
What is nucleotides