Midterm Review
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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Variable | Only one of these will change between testing groups in a strong experiment
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Control | The test group that represents the most typical conditions, with no variables introduced.
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Constants | These are variables that will not change between test groups in a strong experimental design
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Estimated | When taking volume in a graduated cylinder the value is measured to the nearest line then one digit is taken beyond and called this.
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Two | The number of significant zeroes in 0.00004020 m.
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Negative | In 0.0000862 the sign of the exponent in scientific notation will be (positive/negative?)
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accurate | If the average value of three trials is within 5% of the accepted value, then the results are considered _____________.
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Three | The number of significant figures in the product of 12.5 g + 3.46 g.
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mass | In order to calculate density, one must divide ________ by volume.
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Total | To calculate number of half-lives, divide _________ halflife time by length of one half-life.
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Final | Volume of an irregular object is obtained by subtracting beginning volume from _______ volume.
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thousand | There are a _______________ mL in one L
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hundred | There are a _______________ cm in one m
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thousand | There are a _______________ m in one km.
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heat | In a Specific Heat Calculation, Q is obtained in Joules. This is a measure of Energy or _______.
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starting | Q = m * C * Delta T; The Delta T is equal to ending temperature minus ____________ temperature.
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Compound | The chemical combination of two or more different elements.
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Mixture | The physical combination of two or more different substances.
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Homogeneous | A solution in which the mixed substances cannot be visually distinguished.
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Distillation | Evaporation is a form of ___________________ in which a solid precipitate is left behind.
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Straight | Because atoms are made up of mostly empty space, the Alpha particles of Rutherford's experiment mostly went _________ through the gold foil.
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Equal | The law of conservation of matter means that the sum of reactants will _________ the sum of products in a chemical reaction.
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Chemical | A precipitate is an example of a _______________ change.
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Physical | Salt dissolved in water is an example of a _________________ change.
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ElectronCloud | The atomic model of the Quantum Mechanical Theory is called the _______ ________ model.
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Mass | The nucleus of an atom is positively charged, very dense, and contains most of the __________ of an atom.
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Proton | The mass of a neutron most closely equals the mass of a/an ____________.
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Electrons | In a neutral atom the number of protons equals the number of __________.
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Protons | In order to be Isotopes, E-20 and E-21 must have the same number of _________.
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Electrons | In Thomson's model the ________________ are like 'raisins' stuck in positively-charge atomic 'dough.'
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Bohr | In the ___________ atomic model, electrons orbit the nucleus in definite paths.
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Protons | The atomic number of an atom equals the number ______________
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Neutrons | An atom's mass number is equal to its protons plus ____________.
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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.
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.
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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Created by:
tejneckyc
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