Homework Answers
15. Answer is gold
Gold is one of the least reactive chemical elements and is solid under standard conditions. Gold often occurs in free elemental (native) form, as nuggets or grains, in rocks, in veins, and in alluvial deposits.
16. Answer is zinc
Zinc metal in direct contact with the steel substrate offers protection through the preferential oxidation of zinc metal. Zinc is a great choice in protecting steel, as not only does it corrode in preference to the steel, the rate of corrosion is generally slower.
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15. Metallic elements found in nature in the form of compounds, but found in its pure...
The addition of some metallic elements to steels affect the properties of the metal. The ability to alter the steel...
The addition of some metallic elements to steels affect the properties of the metal. The ability to alter the steel corrosion resistance can be effected by the elements: Chromium, Copper, Molybdenum Aluminum, Vanadium Cobalt, Nickel Lead, Tellurium QUESTION 8 1 points The mechanical properties of the metal is determined by OGrain size Material color Initial crystalline structure Material uniformity QUESTION 9 1 points An alloying element is any element added during the manufacture of steel that is not one of...
True or False: In nature, few elements can be found in their elemental form, since most...
True or False: In nature, few elements can be found in their elemental form, since most are combined with other elements to form compounds.
QUESTION 1 1 points The addition of some metallic elements to steels affect the properties of...
QUESTION 1 1 points The addition of some metallic elements to steels affect the properties of the metal. The ability to alter the steel grain structure can be effected by the elements: Aluminum, Vanadium Chromium, Copper, Molybdenum, Tungsten Cobalt, Nickel Lead, Tellurium QUESTION 2 1 points An alloying element is any element added during the manufacture of steel that is not one of four (4) non-metals. An example of an alloying element IS. Tellurium Carbon O Silicon Sulfur QUESTION 3...
Question B6. Which of the following is not correct? (a) The modulus of timber depends on the density of the timber....
Question B6. Which of the following is not correct? (a) The modulus of timber depends on the density of the timber. (b) Timber is a composite based on cellulose polymers which means that its properties are time dependent and timber will creep with time under load. (c) The toughness of timber is reduced by the presence of knots and defects in the structure. (d) Timber is usually dried before use to reduce its moisture content and reduce warping during use....
Question: Create Young’s modulus-melting point (E-Tm) chart (level 2) for metals and alloys. Use ‘guideline’ function...
Question: Create Young’s modulus-melting point (E-Tm)
chart (level 2) for metals and alloys. Use ‘guideline’ function to
determine which slope among 0.5, 1 and 2 in the E-Tm
chart best describes the dependence between E and Tm.
Justify this dependence from the origin of these two
properties.
I had already drawn the picture. Could you explain the
reason why Yong's modulus and melting point have a linear
relationship? Justify this dependence from the origin of these two
properties.!!!!
- 0...
17 -21 Sleeping Sitting 100 Wallona 200 500 1 Swirnering Running 750 24h C. 5.15 h...
17 -21
Sleeping Sitting 100 Wallona 200 500 1 Swirnering Running 750 24h C. 5.15 h D 10h 17. This is not a chemical property A Titanium metal can be drawn into thin wires B Silver metal shows no sign of reaction when placed in hydrochloric acid C. Copper metal becomes greenish-blue on prolonged exposure to the atmosphere D. Beryllium metal when inhaled in a finely divided form, can produce serious lung disease 18 This is not a physical change:...
1.If an atom of Magnesium (Mg) loses an electron to an atom of Oxygen (O), these...
1.If an atom of Magnesium (Mg) loses an electron to an atom of Oxygen (O), these two atoms could: A. form a covalent bond B. not interact in any way C. form an ionic bond D. share a second pair of electrons to form a double bond E. form a hydrogen bond 2. Which of the substances listed below would not be considered a lipid? A. Wax B. Glycogen C. Steroids D. Fat E. Oil 3. A community consists of:...
I. Carbon atoms are about 25% lighter than oxygen atoms (the ratio of their weights is...
I. Carbon atoms are about 25% lighter than oxygen atoms (the ratio of their weights is 3 to 4). What is the weight ratio of the carbon and oxygen that go into the formation of carbon monoxide, CO? (a) 4 parts carbon to 3 parts oxygen (b) 1 part carbon to 4 parts oxygen (c) 1 part carbon to 1 part oxygen (d) 4 parts carbon to 1 part oxygen (e) 3 parts carbon to 4 parts oxygen 2. How...
2. Write the chemical formulas for the following: b. aluminum a. copper c. hydrochloric acid e....
2. Write the chemical formulas for the following: b. aluminum a. copper c. hydrochloric acid e. copper(II) chloride g. sodium hydroxide i. hydrogen k. carbon dioxide m. calcium carbonate o. aluminum chloride q. calcium chloride d. magnesium sulfate – f. sodium bicarbonate h. methane j. sodium chloride 1. oxygen n. magnesium hydroxide p. sodium carbonate — r. water t. carbon monoxide S. sodium v. iron u. sulfur w.iron (II) sulfide y. sulfuric acid x. magnesium chloride z. sodium sulfate 3....
(1) (b) concrete, (c) polyethylene, or (d) water? 1.14 Copper is generally considered easy to weld...
(1) (b) concrete, (c) polyethylene, or (d) water? 1.14 Copper is generally considered easy to weld because of its high thermal conductivity: (a) true or (b) false? (1) 1,15 Which of the following properties or characteristics do not apply to metals (two correct answers): (a) good thermal conductivity, (b) high strength, (c) high electrical resistivity, (d) high stiffness, and (e) ionic bonding? 1.16 An alloy is a metal composed of two or more elements, at least one of which is...
The addition of some metallic elements to steels affect the properties of the metal. The ability to alter the steel corrosion resistance can be effected by the elements: Chromium, Copper, Molybdenum Aluminum, Vanadium Cobalt, Nickel Lead, Tellurium QUESTION 8 1 points The mechanical properties of the metal is determined by OGrain size Material color Initial crystalline structure Material uniformity QUESTION 9 1 points An alloying element is any element added during the manufacture of steel that is not one of...
QUESTION 1 1 points The addition of some metallic elements to steels affect the properties of the metal. The ability to alter the steel grain structure can be effected by the elements: Aluminum, Vanadium Chromium, Copper, Molybdenum, Tungsten Cobalt, Nickel Lead, Tellurium QUESTION 2 1 points An alloying element is any element added during the manufacture of steel that is not one of four (4) non-metals. An example of an alloying element IS. Tellurium Carbon O Silicon Sulfur QUESTION 3...
Question B6. Which of the following is not correct? (a) The modulus of timber depends on the density of the timber. (b) Timber is a composite based on cellulose polymers which means that its properties are time dependent and timber will creep with time under load. (c) The toughness of timber is reduced by the presence of knots and defects in the structure. (d) Timber is usually dried before use to reduce its moisture content and reduce warping during use....
Question: Create Young’s modulus-melting point (E-Tm)
chart (level 2) for metals and alloys. Use ‘guideline’ function to
determine which slope among 0.5, 1 and 2 in the E-Tm
chart best describes the dependence between E and Tm.
Justify this dependence from the origin of these two
properties.
I had already drawn the picture. Could you explain the
reason why Yong's modulus and melting point have a linear
relationship? Justify this dependence from the origin of these two
properties.!!!!
- 0...
17 -21
Sleeping Sitting 100 Wallona 200 500 1 Swirnering Running 750 24h C. 5.15 h D 10h 17. This is not a chemical property A Titanium metal can be drawn into thin wires B Silver metal shows no sign of reaction when placed in hydrochloric acid C. Copper metal becomes greenish-blue on prolonged exposure to the atmosphere D. Beryllium metal when inhaled in a finely divided form, can produce serious lung disease 18 This is not a physical change:...
I. Carbon atoms are about 25% lighter than oxygen atoms (the ratio of their weights is 3 to 4). What is the weight ratio of the carbon and oxygen that go into the formation of carbon monoxide, CO? (a) 4 parts carbon to 3 parts oxygen (b) 1 part carbon to 4 parts oxygen (c) 1 part carbon to 1 part oxygen (d) 4 parts carbon to 1 part oxygen (e) 3 parts carbon to 4 parts oxygen 2. How...
2. Write the chemical formulas for the following: b. aluminum a. copper c. hydrochloric acid e. copper(II) chloride g. sodium hydroxide i. hydrogen k. carbon dioxide m. calcium carbonate o. aluminum chloride q. calcium chloride d. magnesium sulfate – f. sodium bicarbonate h. methane j. sodium chloride 1. oxygen n. magnesium hydroxide p. sodium carbonate — r. water t. carbon monoxide S. sodium v. iron u. sulfur w.iron (II) sulfide y. sulfuric acid x. magnesium chloride z. sodium sulfate 3....
(1) (b) concrete, (c) polyethylene, or (d) water? 1.14 Copper is generally considered easy to weld because of its high thermal conductivity: (a) true or (b) false? (1) 1,15 Which of the following properties or characteristics do not apply to metals (two correct answers): (a) good thermal conductivity, (b) high strength, (c) high electrical resistivity, (d) high stiffness, and (e) ionic bonding? 1.16 An alloy is a metal composed of two or more elements, at least one of which is...
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