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Questions and Answers
Which law states that the mass of substances involved in a chemical reaction remains constant?
Which law states that the mass of substances involved in a chemical reaction remains constant?
- Law of Conservation of Matter (correct)
- Law of Multiple Proportions
- Law of Constant Composition
- Law of Conservation of Energy
In the Law of Multiple Proportions, what characteristic of the mass ratio is crucial?
In the Law of Multiple Proportions, what characteristic of the mass ratio is crucial?
- It can vary depending on the source of the elements.
- It can only be determined using complex calculations.
- It must be a decimal ratio.
- It is expressed in whole-number ratios. (correct)
Which type of radiation is represented by the symbol $^{0}_{-1}eta$?
Which type of radiation is represented by the symbol $^{0}_{-1}eta$?
- Alpha radiation
- Beta radiation (correct)
- Delta radiation
- Gamma radiation
What property allows gamma radiation to penetrate materials like concrete and lead?
What property allows gamma radiation to penetrate materials like concrete and lead?
Which law asserts that all samples of a compound have the same elemental composition by mass, regardless of the sample source?
Which law asserts that all samples of a compound have the same elemental composition by mass, regardless of the sample source?
Flashcards
Law of Conservation of Matter
Law of Conservation of Matter
Mass of substances before a chemical reaction equals the mass after.
Law of Multiple Proportions
Law of Multiple Proportions
If elements combine to make different compounds, the mass ratios of one element combining with a fixed mass of the other are whole-number ratios.
Law of Constant Composition
Law of Constant Composition
All samples of a specific compound contain the same elements in the same mass ratios.
Alpha radiation symbol
Alpha radiation symbol
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Beta radiation symbol
Beta radiation symbol
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