Term
| Describe the Scientific Method |
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Definition
1. observe
2. hypothesis
3. experiment
4. theory |
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Term
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Definition
| the element of an experiment that stays the same i.e.- all on women of the same age, race, weight, height |
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Term
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Definition
| an idea about a reason for something |
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Term
| what is a scientific theory? |
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Definition
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Term
| Where in the atom do you find proton, neutron and electron? |
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Definition
proton and neutron- center
electron- outer rings |
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Term
| proton, neutron and electrons- how are they charged |
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Definition
proton- +
neutron- neutral
electron- - |
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Term
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Definition
| a charged atom (from taking away or adding an electron) |
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Term
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Definition
| an altered number of neutrons |
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Term
| what is the atomic number? |
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Definition
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Term
| what is the atomic weight or mass? |
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Definition
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Term
1.If you could change the # of protons in an atom, what would you create?
2.Do chemists and chemical reactions change the number of protons or neutrons in an atom |
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Definition
1. a new element
2. no this is a nuclear reaction |
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Term
| Describe how an ionic bond forms? Give an example |
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Definition
| when an electron is transferred between atoms i.e.- salt |
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Term
1. Describe how a covalent bond forms
2.Give a couple of examples
3.How are polar covalent bonds different from non-covalent bonds? |
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Definition
1. sharing pairs of electrons
2.diamond, graphite, sand
3. polar bond- electrons are shared but not equally
non-polar bond- perfectly equal sharing |
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Term
1.What is important about electron shells?
2.How do atoms like to have their shell?
3.What do atoms do to get a complete outer shell?
4. How many electrons fit in the first 3 shells?
5. How does this fit the first 3 rows of the periodic table? |
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Definition
1. Because they carry out chemical reactions.
2. FULL
3. form ionic bonds
4.(2,8,8)
5. how its arranged |
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Term
Draw a water molecule showing charges
Why does the O tend to be more negative? |
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Definition
+ +
O O
O
-
oxygen has stronger pull on electrons |
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Term
What is a hydrogen bond? Strong or weak
DRAW ONE! |
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Definition
| weak bond between hydrogen atoms, nitrogen or oxygen |
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Term
What is polarity in general
What are some consequences of water's polarity |
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Definition
2 sides;
what can dissolve in it i.e. water tension, water and oil not mixing |
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Term
| What is another word for an H+ atom? |
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Definition
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Term
| each carbon atom forms how many bonds to other atoms? why? |
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Definition
1. 4
2. to fill electron shells |
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Term
| acids have what pH range? |
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Definition
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Term
| bases have what pH range? |
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Definition
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Term
| The higher the _____ concentration the more acid something is |
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Definition
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Term
High pH numbers are ________
low pH numbers are ________
water is neutral, its pH is _______ |
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Definition
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Term
| Each pH unit is how much different than the next unit? |
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Definition
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Term
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Definition
| a solution that resists changes to its pH |
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Term
| What is a monosaccharide? |
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Definition
fructose, glucose, ribose
a simple sugar, simplest form of carbohydrate |
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Term
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Definition
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Term
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Definition
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Term
| Name 3 different polysacharides formed out of glucose molecules |
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Definition
| glucose, cellulose, starch |
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Term
| What subunits make up proteins? How many are there |
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Definition
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Term
| What is a nucleotide? What do you get when you put them all together? |
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Definition
| A compound consisting of a nucleoside linked to a phosphate group. 2. nucleic acid |
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Term
| In DNA what are the 4 bases? How do they pair? |
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Definition
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Term
| Which base is different in RNA? |
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Definition
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Term
bacteria are pro cells
plant cells are eu cells
animal cells are eu cells
fungal cells are eu cells
protozoa cells are eu cells |
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Definition
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Term
| Are viruses types of cells? |
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Definition
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Term
| What are cell membranes made of? |
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Definition
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Term
| Which types of cells have cell membranes |
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Definition
| ALL cells have cell membranes |
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Term
| which type of cells have cell walls |
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Definition
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Term
| What is the fluid mosaic model of the cell membrane? |
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Definition
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Term
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Definition
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Term
What are the 3 parts of the cell theory?
When was it developed? |
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Definition
1. everything is made of cells
2. everything came from cells
3. smallest unit of life
late 1830's |
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Term
| What is the nucleus, what is kept inside of it? |
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Definition
| brain of the cell, DNA is stored there |
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Term
| What surrounds the nucleus? |
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Definition
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Term
| What is the darker staining body inside the nucleus? What is made there? |
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Definition
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Term
| What is the general purpose of the mitochondria? |
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Definition
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Term
| What happens in the lysome? |
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Definition
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Term
| What is the endoplasmic reticulum for? |
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Definition
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Term
| What are the 2 kinds of ER? Why are they called that? |
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Definition
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Term
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Definition
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Term
| What does the Golgi body do? |
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Definition
| final place where proteins are modified then sorted |
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Term
| What are central vacuoles? What kind of organism tends to have them? |
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Definition
| they pump water, plant cells |
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Term
| What do prokarytic cells have? |
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Definition
| DNA, membranes, ribosomes. |
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Term
| what is the cytoskeleton? |
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Definition
| A microscopic network of protein filaments and tubules in the cytoplasm of many living cells, giving them shape and coherence. |
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Term
| How does penicillin kill bacteria? |
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Definition
A penicillin video clip is available as an individual download.
Penicillin kills bacteria by interfering with the ability to synthesize cell wall. |
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Term
| What is a bacterial colony? |
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Definition
| bacteria living closely together |
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Definition
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