science vocabulary words. chapter 2. 34 words.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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matter | anything that has mass and takes up space
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chemistry | study of matter and how matter changes
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substance | single kind of matter that is pure; always has a specific makeup
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physical property | characteristic of a pure substance that can be observed without changing it to another substance
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chemical property | characteristic of a pure substance that describes its ability to change into different substances
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element | a pure substance that cannot be broken down into any other simpler substance by chemical of physical means
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atom | basic particle from which all elements are made
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chemical bond | force of attraction between two atoms
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molecule | formed when atoms combine to make larger particles
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compound | pure substance made of two or more elements chemically combined in a set ratio
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chemical formula | shows the elements in the compounds and the ratio of atoms
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mixture | made of two or more substances that are together in the same place but are not chemically combined
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heterogeneous mixture | a mixture in what you can see the different parts
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homogeneous mixture | so evenly mixes that you can't see the different parts
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solution | made up of a solute and a solvent
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weight | measure of the force of gravity on an object
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mass | measurement of the amount of matter in an object
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International system of units | universal system of metric units
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volume | amount of space that matter occupies
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density | relates to the amount of mass of a material in a given volume
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physical change | any change that alters the form or appearance of matter but does not create a new substance
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chemical change | a change in matter that produces one or more new substances
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law of conservation of mass | the fact that matter is neither created nor destroyed in any chemical or physical change
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energy | ability to do work or cause change
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temperature | measure of the average energy of random motion of particles of matter
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thermal energy | total energy of all the particles in an object
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endothermic energy | a change in which energy is taken in
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exothermic energy | reaction that releases energy
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kinetic energy | energy of matter in motion
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potential energy | stored energy an object has because of its position
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chemical energy | internal energy stored in the chemical bonds between atoms
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electromagnetic energy | a form of energy that travels through space as waves
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electrical energy | the energy of electrically charged particles moving from one place to another
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electrode | two metal strips attached to wires that are placed inside a solution as part of the electrolysis process
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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