“Big 102” practice test
______a chart that compares groups of data using bars
______horizontal axis (independent variable)
______recorded information
______the spread of data beginning with zero
______the value of each square (what you’re counting by)
______vertical axis (dependent variable)
______‘stuff’ that has physical properties
______a boundary between two different substances
______a change in position over time
______a change in the size, shape or state of matter (the original substance remains the same)(water freezing into ice the original substance remains the same; it is still water)
______a change that results in a new chemical or chemicals (the original substance(s) is changed into something new)
______a characteristic used to describe something
______a characteristic of a substance that describes how it behaves in a chemical reaction (only discovered through a chemical reaction)
______achart of all the known elements: it gives information about the atoms of the different elements
______a chart that connects data points; often used to show change over time
______a chemical that is present when the chemical reaction begins (like an ingredient)
______a description of a compound using chemical symbols and numbers (water’s chemical formula is H2O meaning 2 atoms of hydrogen and 1 atom of oxygen, glucose C6H12O6)
______a force that resists motion (caused when objects are in contact with each other)
______anew substance (chemical) present at the end of a chemical reaction
______a pure substance made of only one kind of atom (approx. 92 natural elements)
______a push or pull on an object
______a substance made up of two or more different elements (water - H2O - is made of hydrogen and oxygen)
______a substance with unique properties (bleach, salt, & water)
______an abbreviation that represents each of the known elements on the periodic table and is used in chemical formulas (C - carbon, Fe - iron)
______an object at rest stays at rest; an object in motion stays in motion______-unless acted upon by an unbalanced force; this is inertia
______any characteristic of a substance that can be observed using the senses
______any solution that can be easily separated (by screen, filter, evaporation etc.)
______energy moving from high energy to lower energy (hot to cold; fast to slow)
______Explain what happened (using facts based on data)and why you think it happened (giving your opinion based on data)
______for every action there is an equal and opposite reaction
______Force = mass x acceleration F = ma
______how far something moves over time (distance divided by time; m/sec, km/hr)
______is the area around the atom’s nucleus where the electrons are found (also called: orbital, or energy level)
______molecules are made up of two or more atoms (the smallest amount of a compound that still has all the properties of the compound)
______negatively charged particle of the atom found circling the nucleus (each negatively charged electron is attracted by 1 positively charged proton)
______particle of the atom with no charge found in the nucleus
______positively charged particle of the atom found in the nucleus (each positively charged proton attracts 1 negatively charged electron)
______stored energy that can be released later
______the ability to do work or cause change
______the amount of matter in an object has (not the same as weight)
______the amount of movement (energy) of the particles in a substance (particles that move fast are ‘hot’)
______the amount of space an object takes up(the size of an object as it appears visually)
______the base metric unit of linear measurement (m)
______the base metric unit of mass (g)
______the base metric unit of volume (l)
______the central part of an atom made up of protons and neutrons
______the curved surface of a liquid (we read the bottom of the meniscus)
______the energy a mass has due to its motion
______the force of attraction between two objects(greater mass means stronger gravity; closer objects means stronger gravity)
______the metric scale for measuring temperature; water freezes at 0o and boils at 100o
______the number of protons in an atom
______the part of a solution that is dissolved (smaller amount/usually a solid)
______the part of the solution that does the dissolving (larger amount/liquid)
______the point in an object where there is equal mass in each opposite direction. (also called the center of mass or the center balance of an object)
______the smallest particle of an element that still has all the properties of that element
______the state of matter that does not have a definite shape but does have a definite volume
______the state of matter that does not have a definite shape or volume
______the state of matter that has a definite shape and volume
______the study of matter, its properties, interactions, and composition
______the study of motion, forces, and energy
______the systematic study of everything
______the tendency of a mass to resist changes in motion(objects with greater mass have greater inertia)
______to gather information that does NOT use numbers or measurement(blue sky, scaly skin) (L for ‘love’)
______to gather information that uses numbers or measurement(6 legs, 23 centimeters) (N for ‘number’)
______total number of protons and neutrons in the nucleus of an atom
______when a gas changes directly into a solid or when a solid changes directly into a gas (without going into a liquid state)
______when a gas changes into a liquid
______when a liquid changes into a gas
______when a liquid changes into a solid
______when a liquid quickly changes into a gas
______when a solid changes into a liquid
______when any other state of matter changes into a gas (vapor is another word for gas)
______when any other state of matter changes into a liquid
______when any other state of matter changes into a solid
______a change in velocity (a=Δv)
______A question the experiment should answer
______a system for solving problems or questions
______along a line (straight or curved)
______an educated guess or testable ‘If/Then’ prediction for an experiment
______applying a force that causes an object to move
______how much gravity pulls on an object’s mass
______how much mass is contained in a certain volume; mass divided by volume; (‘the broken heart) (the density of water is 1 gram per milliliter 1g/ml)
______mass times velocity momentum = m·v
______one kind of energy changing into another kind of energy(electricity turning into light)
______prefix, 1/100; (centimeter, one hundredth of a meter)
______prefix; 1/1000; (milliliter, one thousandth of a liter)
______prefix; 1000, one thousand(kilometer, 1,000 meters)
______presenting your inferences about the experiment (an inference= tell what happened and why you think it happened)
______problem – hypothesis – experiment – observe – conclusion – share
______something that changes
______speed and direction
______the difference between the largest data value, and the smallest data value
______the group tested without the independent variable
______the liquid formed when one substance is mixed completely with another
______the object that a force is applied to
______the ONE(and only one) change you test in an experiment
______the science activity that teststhehypothesis
______the summary of the experiment
______the worldwide system of measurement; based on powers of 10
______things that are kept the same so the experiment is ‘fair’
______to gatherinformation using the 6 senses(common sense, sight, smell, taste, hearing, touch)
______what we measure during an experiment; It changes ‘depending on’ the independent variable