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| Inorganic chemistry is the study of |
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| non-carbon related compounds |
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| The two most important properties of all matter are... |
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| taking up space and having mass |
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A student recorded the following while completing an experiment.
Color of substance: yellow, shiny powder
Effect of magnet: yellow, shiny powder was attracted
The student should classify the substance as a(n) |
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| A state of matter in which a material has no definite shape but has a definite volume is the ______ state |
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| always the same shape regardless of its container |
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| a blend of any two or more kinds of matter, as long as each maintains its own unique properties |
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| If a mixture is not uniform through, it is called |
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| The vertical columns on the periodic table |
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| A plausible explanation of a body of observed natural phenomena |
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| The SI base units for length and time are |
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| Which of these is a measure of the amount of material? |
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| The relationship between the mass m of a material, its volume V, and its density D is... |
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| the temperature should be specified |
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| The density of aluminum is 2.70 g/cm³. What is the mass of a solid piece of aluminum with a volume of 1.5 cm³? |
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| If repeated measurements agree closely but differ widely from the accepted value, these measurements are |
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| precise, but not accurate |
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| A chemist obtained the values 5.2246g, 5.2353 g, and 5.2501 g for the mass of a sample. Without knowing the true mass of the sample, it can be said that these values have |
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| The number of significant figures in the measurement 0.000 305 kg is |
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| The number of significant figures in the measured value 0.0320 g is |
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| Which of these measurements has been expressed to three significant figures? |
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| The number of significant figures in the measurement 2010 cm is |
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| Three samples of 1.12g, 1.8 g, and 1.562 g are mixed together. The combined mass of the three samples, expressed to the correct number of significant figures, would be recorded as |
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How many significant figures would the answer to the following calculation have?
3.475 x 1.97 + 2.4712 |
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| The measurement 0.020 L is the same as |
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| The average distance between the Earth and the moon is 386,000 km. Expressed in scientific notation, this distance is written as |
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| When 6.02 x 10²³ is multiplied by 9.1 x 10⁻³¹, the product is |
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| The capacity of a Florence flask is 250 mL. Its capacity in liters expressed in scientific notation is |
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| Dalton incorporated the law of conversation of mass into his atomic theory by asserting that |
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| Which of the following statements it true according to modern atomic theory? |
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| Atoms of the same element may have different masses. |
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| The deflection of cathode rays in Thomson's experiments was evince of the ___ nature of electrons. |
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| How many isotopes of hydrogren are known |
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| The atomic number of oxygen, 8, indicated that there are eight |
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| Protons in the nucleus of an oxygen atom |
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| All atoms of the same element have the same |
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| As the atomic number increases, the number of electrons in a neutral atom |
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| As the atomic number increases, the number of electrons in a neutral atom |
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| The atomic number of neon is 10. the atomic number of calcium is 20. Compared with a mole of neons, a mole of calcium contains |
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| The mass of 5.000 mol of cesium (atomic mass 132.9 amu) is |
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| The speed of an electromagnetic wave is equal to the product of its wavelength and its |
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| the emission of electrons from metals that have absorbed photons is called the |
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| Because excited hydrogen atoms always produce the same line-emission spectrum, scientists concluded that |
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| released photons of only certain energies |
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| the size and shape of an electron cloud are most closely related to the electrons |
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| The main energy levels of an atom are indicated by the |
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| The spin quantum number of an electron can be thought of as describing |
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| the direction of an electron spin |
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| The set of orbitals that are dumbbell shaped and directed along the x, y, and z are axes called |
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| The number of orbitals for the d sublevel is |
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| How many orbitals can exist at the third main energy level? |
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| The statement that no two electrons int he same atom can have the same four quantum numbers is |
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| the Pauli exclusion principle |
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| Which of the following rules requires that each of the p orbitals at a particular energy level receive one electron before any of them can have two electrons. |
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| The sequence in which energy sublevels are filled is specified by |
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| Which of the following lists atomic orbitals in the correct order they are filled according to the Aufbau principle? |
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| 1s 2s 2p 3s 3p 4s 3d 4p 5s |
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| Mendeleev left spaces in his periodic table and predicted the existence of three elements and their |
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| Mendeleev noticed that properties of elements usually repeated at regular intervals when the elements were arranged in order of increasing |
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| Moseley's work led to the realization that elements with similar properties occures at regular intervals when the elements were arranged in order of increasing |
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| permits the properties of an element to be predicted before the element is discovered |
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| What are the elements with atomic numbers from 58 to 71 called? |
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| The periodic law states that |
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| the physical and chemical properties of the elements are functions of their atomic numbers |
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| Elements in a group of column in the periodic table can be expected to have similar |
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| For elements in groups 1, 2, and 18, the increase in atomic number for successive elements follow the pattern 8, 8, 18, __, 32. What number completes the pattern? |
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