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Science 10/9/11
Science Stuff
| Question | Answer |
|---|---|
| using one or more of your senses to gather information | observing |
| descriptions that don't involve numbers or measurements | qualitative observations |
| descriptions that involve numbers or measurements | quantitative observations |
| when you explain your observations | inferring |
| making a forecast of what will happen in the future using past experience or evidence | prediction |
| the study of the properties of matter and how matter changes | chemistry |
| the study of matter and energy and how they interact | physics |
| refers to the diverse ways in which scientists study the natural world | scientific inquiry |
| What are the steps of scientific inquiry? | posing questions, developing hypotheses, designing experiments, collecting and interpreting data, drawing conclusions, and communicating ideas and results |
| a possible answer to a scientific question or explanation for a set of observations | hypothesis |
| factors that can change in an experiment | variables |
| the variable that is changed | manipulated variable |
| the variable that is expected to change because of the manipulated variable | responding variable |
| an investigation in which all variables except one remain the same | controlled experiment |
| the facts, figures, and other evidence gathered though observations | data |
| sharing ideas and conclusions with others thorugh writing and speaking | communicating |
| a statement that describes what scientists expect to happen every time under a particukar set of conditions | scientific law |
| a well-tested explanation for a wide range of observations or experimental results | scientific theory |
| What are three things you should remember when working with fire? | alwyas wear goggles, never heat anything unless instructed to do so, keep all combustible materials away from flames, never reach across a flame, hold the back of your hand near a hot object to test heat |
| What are three things that have to do with dress code in science safety rules? | wear safety goggles, wear an apron or labcoat, tie back long hair, never wear open toe shoes or sandals |
| anything that has mass and takes up space | matter |
| a single kind of matter that is pure and always has a specific set of properties | substance |
| a characteristic of a pure substance that can be observed without changing it into another substance | physical property |
| a characteristic of a pure substance that describes its ability to change into different substances | chemical property |
| a pure substance that cannot be broken down into any other substances by chemical or physical means | element |
| the basic particle from which all elements are made | atom |
| a force of attraction between two atoms | chemical bond |
| groups of two or more atoms held together by chemical bonds | molecules |
| a pure substance made of two or more elements chemically combined in a set ratio | compound |
| shows the elements in a compound and the ratio of atoms | chemical formula |
| What is one example of a chemical formula? | CO 2 |
| made of two or more substances that are together in the same place but not chemically combined | mixture |
| a mixture where you can see the different parts | heterogeneous mixture |
| a mixture where substances are so evenly mixed that you cannot see the different parts | homogeneous mixture |
| an example of a homogeneous mixture | solution |
| a measure of the force of gravity on an object | weight |
| the measurement of the amount of matter in an object | mass |
| What do scicentists use to measure the properties of matter? | International System Of Units |
| What is the abbreviation for the International System Of Units? | SI |
| the amount of space that an object occupies | volume |
| How do you calculate volume? | LWH |
| relates to the mass of a material in a given volume | density |
| How do you calculate density? | mass/volume |
| If an object was more dense than water, will it sink or float? | sink |
| What is SI the abbreviation of | International System of Units |
| If you were on the moon, would your weight or mass change compared to that on Earth? | weight |
| How do you measure weight? | weigh it on a scale |
| How do you measure mass? | weigh it on a scale |
| the energy of matter in motion | kinetic energy |
| releasing energy | exothermic |
| a change in which energy is taken in | endothermic |
| any change that alters the form or appearance of matter but does not make any substances in the matter into different substances | physical change |
| What happens to a substance after it undergoes a physical change? | It is still the same substance after the change |
| What are two examples of physical changes? | changes in state and changes in shape or form |
| a change in matter that produces one or more new substances | chemical change |
| What happens to a substance after it undergoes a chemical change? | it produces new substances with properties different from those of the original substance |
| What are two examples of chemical changes? | combustion, electroysis, oxidation, ad tarnishing |
| the fact that matter is not created or destroyed in any chemical or physical change | law of conservation of mass |
| the ability to do work or cause change | energy |
| Every chemical or physical change in matter includes a change in what? | energyy |
| a measure of the average energy of random motion of particles of matter | temperature |
| the total energy of all the particles in an object | thermal energy |
| What are the six types of energy? | kinetic, potential, electromagnetic, electrical, and thermal energy |
| the energy an object has because of its position | potential energy |
| the internal energy stored in the chemical bonds between atoms is a form of potential energy that is sometimes called this | chemical energy |
| a form of energy that travels through space as waves | electromagnetic energy |
| the energy of electically charged particles moving from one place tpo another | electrical energy |
| two metal srips placed in a solution during electrolysis | electrodes |
| During a chemical change, chemical energy may/may not be changed to other forms of energy | may |
| other forms of energy may/may not be changed to chemical energy | mayyy |
Created by:
NeonGlitterGurl
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