HEM1 Study guides, Class notes & Summaries

PORTAGE LEARNING CHEM104 FINAL 2024 1. What is made up of 2 or more atoms in a specific shape: - Molecules 2. What has matter and distinct properties that doesn’t vary from sample to sample? - Pure substances 3. Is granulated suger a pure substance? - Yes 4. Is sea water a pure substance? - No 5. What is composed of only one kind of atom? - An element

1. Question: What is the volume, in cubic centimeters, of a brick that is 4.0 in × 2.7 in × 8.0 in? 2. Question: A sailor circumnavigated the earth and covered 4,264,000 meters. Express this number in standard scientific notation. 3. Question: The state of matter for an object that has both definite volume and definite shape is 4. Question: How many of the following numbers contain 3 significant figures? 5. Question: In the spring of 2008, gasoline cost £1.029 per Liter in London. On the ...

The two states that are collectively known as the condensed states are _______. CORRECT ANSWER solid and liquid The attractive forces that exist between all molecules and atoms, and are the forces that hold many solids and liquids together CORRECT ANSWER intermolecular forces Intermolecular forces are only significant at _____. CORRECT ANSWER short distances The state of a sample of matter is determined by the magnitude of __________. CORRECT ANSWER the intermolecular forces present ...

STRAIGHTERLINE CHEM101 FINAL

1. Question: Which one of the following is most likely to be an ionic compound? 2. Question: The phosphorus atom in PCl3 would be expected to have a 3. Question: The phosphorus atom in PCl3 would be expected to have a give CH3Cl and hydrogen chloride. 4. Question: How many of the following molecules have no dipole moment? 5. Question: Atoms having equal or nearly equal electronegativities are expected to form 6. Question: Element A has an electronegativity of 0.8 and element B has an electr...

Straighter Line CHEM101 Final Questions And Answers With Verified Updates Straighter Line CHEM101 Final Questions And Answers With Verified Updates

1. Question: A sample of oxygen gas has a volume of 3.52 L at 27°C and 800.0 torr. How many oxygen molecules does it contain? 2. Question: Consider a sample of gas in a container on a comfortable spring day. The Celsius temperature suddenly doubles, and you transfer the gas to a container with twice the volume of the first container. If the original pressure was 12 atm, what is a good estimate for the new pressure? 3. Question: Gas A and gas B are combined in a flask at initial pressures of 1...

A smart phone has dimensions of 4.9 inches (height), 2.3 inches (width) and 8.0 millimeters (depth). What is the volume of the smart phone in cubic centimeters? (1 in = 2.54 cm) Select one: A. 1.7 × 105 cm3 B. 34 cm3 C. 58 cm3 D. 3.4 cm3 E. 90 cm3 The correct answer is: 58 cm3 A large pizza has a diameter of 15 inches. Express this diameter in centimeters. (1 in = 2.54 cm) Select one: A. 24 cm B. 18 cm C. 38 cm D. 9.3 cm E. 5.9 cm The correct answer is: 38 cm What is a unifying...

1. Question: We discussed the different types of intermolecular forces in this lesson. Which is the strongest in CF2H2 ? 2. Question: Water is such a special molecule with some really unique properties. Why is it so unusual? 3. Question: We discussed the different types of intermolecular forces in this lesson, which can affect the boiling point of a substance. Which of these has the highest boiling point? 4. Question: If you have 2.00 x 103 J of energy, what mass (g) of solid butane (C4H10O) ...

1. Question: What is the volume, in cubic centimeters, of a brick that is 4.0 in × 2.7 in × 8.0 in? 2. Question: A sailor circumnavigated the earth and covered 4,264,000 meters. Express this number in standard scientific notation. 3. Question: The state of matter for an object that has both definite volume and definite shape is 4. Question: How many of the following numbers contain 3 significant figures? 5. Question: In the spring of 2008, gasoline cost £1.029 per Liter in London. On the ...