Term
| What is a system of knowledge and the methods used to find that knowledge? |
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Definition
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Term
| How are science and technology related? |
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Definition
| Advances in technology lead to advances in science |
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Term
Which of the following is NOT a natural branch of science?
a.) Life Science
b.) Earth and Space Science
c.) Physical Science
d.) Social Science |
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Definition
| D. Social science is Not a branch of natural science |
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Term
| How does Earth science overlap with life science? |
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Definition
| Earth Science involves the study of systems that may include living organisms |
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Term
Which of the following is NOT one of the main ideas of Physical Science?
A.) The universe is very old and very large
B.) Forces cause change in motion
C.) Energy can be transferred from one form to another, but it can never be destroyed
D.) One of the main branches of natural science is biology |
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Definition
| D.) One of the main branches of natural science is biology. |
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Term
| What are the building block of all matter? |
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Definition
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Term
| In which step of the scientific method is information obtained through the senses? |
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Definition
Making Observations
is the step of the scientific method in which information is obtained through the senses |
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Term
| What happens when the data in an investigation do not support the original hypothesis? |
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Definition
| The hypothesis is revised |
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Term
| What is a statement that summarizes a pattern found in nature? |
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Definition
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Term
Which of the following statements is TRUE about scientific theories?
A.) they become scientific laws
B.) they can be proven
C.) they become hypotheses
D.) they summarize patterns found in nature |
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Definition
| D.) Scientific theories summarize patterns found in nature |
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Term
| What is a physical or mental representation of an object or an event? |
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Definition
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Term
| What is the most important lab safety rule? |
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Definition
| Listen to the instructions before you begin and follow ALL instructions given by the teacher.. if you do not understand something.. ASK the teacher before proceeding |
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Term
Which of the following is an example of a SAFE laboratory procedure?
a.) tying back long hair and loose clothing
b.) eating or drinking from laboratory glassware
c.) touching hot objects with bare hands
d.) testing an odor by directly inhaling vapors |
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Definition
| a.) tying back long hair and loose clothing |
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Term
| How is 0.00069 written in scientific notation? |
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Definition
6.9x10 ^-4
(-4 in subscript, meaning 6.9x10 to the 4th power)
To get from 0.00069 to 6.9 is a movement of 4 decimal places, and since the original number is smaller than 1, the power of 10 is negative. |
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Term
Which of the following conversion factors would you use to change 18 kilometers to meters?
a.) 1000m/1km
b.) 1km/1000m
c.) 100m/1km
d.) 1km/100m |
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Definition
a.) 1000m=1km
aka(1km=1000m)
Tip: just Multiply by one thousand.
(the clue is in the word KILO which means 1000)
Therefore:
18km=18x1000m
=18 000m
simple math :) |
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Term
What are 6cm equal to?
a.) 600 meters
b.) 6/10 of a millimeter
c.) 60 millimeters
d.) 600 millimeters |
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Definition
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Term
| On the Celsius, at what temperature does water boil? |
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Definition
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Term
| Approximately how many Kelvins are equal to 60 degrees Fahrenheit? |
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Definition
289K
Work:
K = (F-32)/1.8 + 273.15
K = (60-32)/1.8 + 273.15
K = (28) /1.8 + 273.15
K = 15.555555556 + 273.15
K = 288.705555556
round
K= 289
1.)Subtract 32 from the Fahrenheit temperature.
2.)Multiply this number by 5.
3.)Divide this number by 9.
4.)Add 273.15 to this number. |
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Term
| Which type of graph is used to show how a part of something relates to the whole? |
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Definition
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Term
| What is the relationship in which the ratio of the manipulated variable and the responding variable is constant? |
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Definition
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Term
How do scientists communicate the results of investigations?
a.) by publishing articles in scientific journals
b.) by giving talks at scientific conferences
c.) by exchanging emails
d.) all of the above |
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Definition
D.) all of the above:
publishing articles in scientific journals, by giving talks at scientific conferences, by exchanging e-mails |
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Term
| How do scientists who speak different languages make their data understandable to one another? |
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Definition
They all use SI
( SI is the abbreviation for the International System of Units, also known as the metric system.) |
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Term
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Definition
| a process in which scientists examine other scientists' work |
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Term
| Why are peer reviews important? |
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Definition
| scientists receive questions and criticism from their peers, data is checked for accuracy, AND scientists receive comments and suggestions from other scientists |
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Term
| If the relationship between the manipulated variable and the responding variable is a direct proportion, what will a line graph of this relationship look like? |
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Definition
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Term
Which of the following are pure substances?
a.) solutions
b.) compounds
c.) homogeneous mixtures
d.) colloids |
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Definition
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Term
Which of the following is NOT a pure substance?
a.) milk
b.) oxygen
c.) water
d.) carbon dioxide |
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Definition
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Term
| What is a substance that is made up of only ONE KIND of atom? |
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Definition
an element
(made up of many atoms of the SAME KIND) |
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Term
If an unknown substance CANNOT be broken down into simpler substances, it is
a.) a compound
b.) an element
c.) made up of one kind of atom
d.) both b and c |
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Definition
| d.) if an unknown substance CANNOT be broken down, it is an element.. an element is a substance that is made of of only one type of atom!) |
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Term
| What is the symbol for aluminum? |
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Definition
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Term
| What is the symbol for gold? |
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Definition
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Term
| If a material contains three elements joined in a fixed proportion, what is it? |
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Definition
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Term
What is being described below?
a.) an element
b.) a mixture
c.) a compound
d.) a mixture
-consists of atoms of two or more different elements bound together,
-can be broken down into a simpler type of matter (elements) by chemical means (but not by physical means),
-has properties that are different from its component elements, and
-always contains the same ratio of its component atoms. |
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Definition
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Term
What is being described below?
a.) an element
b.) a mixture
c.) a compound
d.) solution
-consists of only one kind of atom,
-cannot be broken down into a simpler type of matter by either physical or chemical means, and
-can exist as either atoms (e.g. argon) or molecules (e.g., nitrogen). |
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Definition
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Term
| A ___________ consists of two or more atoms of the same element, or different elements, that are chemically bound together. |
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Definition
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Term
What is being described below?
a.) an element
b.) a mixture
c.) a compound
d.) a solution
-consists of two or more different elements and/or compounds physically intermingled,
-can be separated into its components by physical means, and
-often retains many of the properties of its components. |
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Definition
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Term
| What is a MIXTURE that appears to contain only ONE substance? |
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Definition
a HOMOgeneous mixture
(tip: the root word ''homo'' means SAME or ONE... just like a homosexual likes ONE (the SAME) sex... kmsl |
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Term
Which of the following is a HETEROgeneous mixture?
a.) water in a swimming pool
b.)sugar water
c.) a jar of mixed nuts
d.) stainless steel |
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Definition
c.) a jar of mixed nuts
(because the root word hetero- means different or other.... and a heterogeneous mixture is a mixture of PHYSICALLY DISTINCT substances with different properties.. meaning you call clearly tell that it is a mixture of more than one substance..) |
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Term
A mixture can be classified as a solution, suspension, or colloid based on the..
a.) # of particles
b.) Size of its Largest particles
c.) color of its particles
d.) size of its smallest particles |
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Definition
| b.) size of its largest particles |
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Term
Water is a compound.
true/false |
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Definition
| True. Water is a compound because it it made up of more than one type of atom and it can be broken down into simpler substances |
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Term
| Is water a compound? if so, how? |
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Definition
| Yes, water is a compound bc it is made up of more than one type of atom (2 hydrogen atoms for each oxygen atom) and because it can be broken down into simpler substances |
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Term
Which of the following is a mixture?
a.) Carbon Dioxide
b.) silicon
c.) silicon dioxide
d.) sand |
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Definition
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Term
Which of the following is a characteristic of a mixture?
a.) has varying properties
b.) has a fixed composition
c.) contains only pure substances
d.) both a and b |
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Definition
D.) both a and b
Mixtures have varying properties and have a fixed proportion.
two or more different substances are mixed together but not combined chemically, so that they can be separated |
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Term
you are about to open a container of soy milk but notice that there are instructions to ''shake well before serving.'' The soy milk was most probably a ___________
a.) solution
b.) pure substance
c.) colloid
d.) suspension |
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Definition
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Term
Which of the following is malleable?
a.) glass
b.) pottery
c.) ice
d.) gold |
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Definition
d.) gold
Malleability refers to the the property of many metals which allows them to be deformed easily by hammering or pressing. the most malleable metal is gold. It can be hammered into thin foils only 0.0025 millimetre thick |
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Term
Which of the following has the highest viscosity
a.) corn syrup
b.) milk
c.) water
d.) orange juice |
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Definition
a.) Corn Syrup
(viscosity is a measure of the resistance of flowing) |
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Term
| What substance has a MELTING point of 0 degrees Celsius and a BOILING point of 100 degrees Celsius? |
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Definition
Water.
(from ice to liquid water to water vapor.) |
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Term
| A material that is malleable and conducts electricity is most likely _________ |
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Definition
A Metal
(..like copper or gold..etc) |
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Term
| What Physical Properties of nylon and leather make them good materials to use for shoelaces? |
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Definition
| Durability and Flexibility |
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Term
Which of the following materials is useful for making molds because of its low melting point?
a.) wood
b.) metal
c.) clay
d.) wax |
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Definition
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Term
| Filtration can be used to separate mixtures based on... |
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Definition
| ..The size of their particles |
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Term
| What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter? |
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Definition
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Term
| When a PHYSICAL Change in a sample occurs, which of the following does NOT change? |
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Definition
Composition
(what it is made up of) |
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Term
Which of the following is a physical change?
a.) sawing a piece of wood in half
b.) burning a liece of wood
c.) rust forming on an iron fence
d.) a copper roof changing color from red to green |
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Definition
a.) sawing a piece of wood in half
...even though the change is irreversible, it is still not a chemical change.. it is a physical change, bc even though you changed its size.. it is still a piece of wood.. the composition remains the same |
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Term
| Flammability is a material's ability to burn in the presence of __________ |
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Definition
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