Vocabulary
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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| Radioactive | An unstable isotope that spontaneously emits energy to become more stable.
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| Condensation | Particles of a vapor striking the liquid surface and returning to the liquid phase.
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| Nuclear fusion | Small nuclei combine to form a larger nucleus.
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| Electron | Charge is negative
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| Proton | Charge is positive
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| Neutron | Charge is neutral
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| Kinetic energy | Energy of motion
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| Potential energy | Stored energy
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| Meter | Standard metric unit for length measurements.
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| Liter | Standard metric unit for volume.
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| Gram | Standard metric unit for weight.
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| Precision | Reproducible or repeatedly obtain measurements with values close together.
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| Exact numbers | Numbers obtained from counting or from definitions comparing two units in the same system of meaurements.
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| Rem | Represents the measure of biological effect or biological damage done by different kinds of radiation.
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| Protons and neutrons | Subatomic particles located in the nucleus of an atom.
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| Half-life | The length of time for half of a radioactive sample to decay.
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| Hypothesis | A tentative "guess" to explain an observation that can be tested.
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| Beta | Type of emission when an unstable nucleus converts a neutron to a proton and emits an electron from the nucleus.
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| Calories | Heat that is a form of energy - the appropriate reporting unit for the amount/quantity of heat.
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| Atom | Smallest particle of an element
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| Physical properties | Shape, color, state of matter, melting point and density.
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| Physical changes | Changes in matter
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| Chemical changes | An irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance. Ex: rust on metal
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| Volume | The amount of space an object occupies.
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| Mass | The weight of an object.
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| Density | The state or quality of being dense; compactness
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| Matter | Anything that occupies space and has mass.
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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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