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Chem 110
| Term | Definition |
|---|---|
| What has no specific shape and no specific volume? | Gas |
| What has no specific shape, but a specific volume? | Liquid |
| What has a specific shape and a specific volume? | Solid |
| What is Precision | How close a measured number is to other measured numbers |
| What is Accuracy? | How close a measured number is to the true value |
| A small amount of salt dissolved in water is an example of? A. Solid B.Homogenous Mixture C.Pure Substance D.Compound E.Heterogeneous Mixture | B. Homogeneous Mixture |
| A combination of sand, salt, and water is an example of a? A) heterogeneous mixture B) homogeneous mixture C) pure substance D) solid E) compound | A) heterogeneous mixture |
| Of the following, only __________ is an extensive property. A) temperature B) density C) mass D) boiling point E) freezing point | C) Mass |
| How many significant figures are in the number 0.0040750? | 5 |
| Which of the following is the same as 0.001 cm? A) 1 mm B) 0.01 m C) 100 mm D) 0.01 mm E) 0.01 dm | D) 0.01 mm |
| In which one of the following numbers are all of the zeros significant? A) 00.0030020 B) 0.05843 C) 100.090090 D) 0.1000 E) 0.143290 | C). 100.090090 |
| Which of the following liquids has the greatest density? A) 0.022 cm3 with a mass of 0.10 g B) 13 cm3 with a mass of 23 g C) 54 cm3 with a mass of 45 g D) 210 cm3 with a mass of 12 g E) 3.5 cm3 with a mass of 10 g | A) 0.022cm3 with a mass of 0.10 g |
| A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper? | D= 8.96 g/cm3 |
| Of the following, __________ is the largest mass? A) 2.5 × 109 fg B) 2.5 × 10-2 mg C) 2.5 × 1015 pg D) 25 kg E) 2.5 × 1010 ng | D) 25 kg |
| An element cannot _________? A) be separated into other substances by chemical means B) be part of a homogeneous mixture C) be a pure substance D) be part of a heterogeneous mixture E) interact with other elements to form compounds | A) be separated into other substances by chemical means |
| Which one of the following is a pure substance? A) elemental copper B) salt water C) milk D) concrete E) wood | A) elemental copper |
| Postulates of Dalton’s Atomic Theory | 1. All matter consists of tiny particles called atoms 2. An atom cannot be created, divided, destroyed, or converted to any other type of atom 3. Atoms of a particular element have identical properties |
| The gold foil experiment performed in Rutherford's lab ______ A) led to the discovery of the atomic nucleus B) confirmed the plum-pudding model of the atom C) utilized the deflection of beta particles by gold foil | A) led to the discovery of the atomic nucleus |
| All atoms of a given element have the same __________. A) mass B) number of electrons and neutrons C) number of neutrons D) number of protons E) density | D) number of protons |
| Different isotopes of a particular element contain different numbers of _________ A) neutrons B) protons C) protons and neutrons D) protons, neutrons, and electrons E) None of the above is correct. | A) neutrons |
| In the periodic table, the elements are arranged in __________ A) order of increasing metallic properties B) reverse alphabetical order C) alphabetical order D) order of increasing atomic number E) order of increasing neutron content | D) order of increasing atomic number |
| The ground state configuration of fluorine is ______ A) [He]2s22p6 B) [He]2s22p4 C) [He]2s22p5 D) [He]2s22p2 E) [He]2s22p3 | C) [He]2s22p5 |
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