Term
| the 5 steps to the scientific method |
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Definition
1. state the problem
2. gather information
3. make a hypothosis
4. perform experiments
5. make a conclusion |
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Term
| what is a controlled variable |
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Definition
| is the variable used in both experiments |
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Term
| what is a manipulated variable |
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Definition
| is the variable used to change the outcome of the experiment |
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Term
| what is a responding variable |
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Definition
| is the variable to react to manipulated variable |
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Term
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Definition
| the second step to the scientific method, data to take in to our senses |
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Term
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Definition
| offers an explanation, based on background knowledge |
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Term
| what is the differnce between qualitive and quantitive obsevations |
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Definition
qualitive is based on the color,texture,shape,size
quantitive is based on the number or amount |
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Term
| what are the 8 things that make up a living thing |
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Definition
1. cells
2. reproduce
3. based on genetic code
4. grow and develop
5. obtain and use materials and energy
6. respond to their enviorment
7. maintain stable enviorment
8. can change over time as a group |
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Term
| give an example of an metric system unit and a english system unit how are they different |
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Definition
ex. metric liters,milliters,kilometers,centimeter
ex. english
lb.,inches,feet,miles, |
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Term
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Definition
| protons,neutrons,and electrons |
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Term
| how is an isotope different than an atom |
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Definition
| an isotope has the same amount of protons and electrons but have a different amount of neutrons. and an atom has an equal amount of protons neutrons and electrons |
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Term
| how are atoms, elements, molecules, and compounds related |
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Definition
| atom is the basic unit, then elements are made up of one type of atom and compounds is made up of multiple elements and molecules are made up by at least 2 atoms held together |
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Term
| what is the difference between ionic and covalent bond |
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Definition
| A covalent bond is a sharing of electrons in the outer shell. An ionic bond is a bond formed by the attraction between two oppositely charged ions. |
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Term
| what kind of bond is created between different water molecules. |
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Definition
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Term
| give an example of cohesion and adhesion |
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Definition
ex. adhesion
water clinging to waxed paper
ex. cohesion
water falling from the sky in rain drops |
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Term
| give an example of solution and suspension |
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Definition
ex. solution
sugar dissolving in water
ex. suspension
the materials that do not dissolve and stay separate |
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Term
| give the monomer of each macromolecules |
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Definition
carbs: monomers are sugars
lipids: fat acid
proteins: amino acids
nucleic acids:nucleotide which is made up of a sugar, an N-base and a phosphate group |
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Term
| give the function of each macromolecules |
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Definition
carbs:store and transport energy
protein:are enzymes that catalyze biochemical reactions, and are vital to metabolism
lipids: used to store energy
nucleic acid: to store heridity information |
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Term
| idenify the reactants and the products in a chemical reaction |
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Definition
ex. a+b=ab
a+b is the reactant
ab is the product |
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Term
| what is the function of a catalyst |
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Definition
| to lower the energy of activation |
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Term
| how does it relate to the elephant toothpaste experiment |
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Definition
| the catalyst is what makes the peroxide molecule release the oxygen atom faster |
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Term
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Definition
| is the creation of a new organism by combining the genetic material of two organisms |
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Term
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Definition
| is a mode of reproduction by which offspring arise from a single parent |
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Term
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Definition
| is the electromagnetic attractive interaction of a hydrogen atom and an electronegative atom |
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Term
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Definition
| is a molecule that may bind chemically to other molecules to form a polymer |
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Term
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Definition
| is a large molecule (macromolecule) composed of repeating structural units |
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Term
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Definition
| is an organic compound that consists only of carbon, hydrogen, and oxygen |
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Term
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Definition
| constitute a broad group of naturally occurring molecules that include fats, waxes, sterols, fat-soluble vitamins |
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Term
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Definition
| are biological molecules essential for known forms of life on Earth |
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Term
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Definition
| are biochemical compounds consisting of one or more polypeptides typically folded into a globular or fibrous form, facilitating a biological function. |
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