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Test your basic knowledge |
Basic Matter
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 37 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. A force of attraction between particles
Food
Van der Waals bond
gaseous state
Bond
2. The resistance of an elastic body to deflection by an applied force
Composite
Thermal expansion
Stiffness
Molecule
3. Vegetable and meat origin
Toughness
Element
Atom
Food
4. 1) glasses 2) glass ceramics 3) Graphite 4)Diamond
Thermal conductivity
Ionic bond
classification of Ceramics
Solid state
5. The ability of a material to be drawn or extruded into a wire or other extended shape.
OHMS Law
classification of polymeric
Ductility
gaseous state
6. Thermosets and thermoplastics
Ionic bond
Electrical resistivity
Plastics
Compound
7. The resistance a material offers to penetration of scratching
Bond
Hardness
classification of polymeric
Pure substance
8. 1) Ferrous metals and alloys (irons - carbon steels - alloy steels - stainless steels - too and die steels) 2) nonferrous metals and alloys (aluminum - copper - magnesium - nickel - titanium - precious metals - refractory metals - super alloys)
classification of Metals
Ceramics
Secondary bond
classification of Ceramics
9. Ferrous and non - ferrous
Solid state
Density
Metal
Compound
10. A mixture composed of two or more substances (materials) with one substance acting as the matrix or glue
OHMS Law
Composite
Bond
classification of polymeric
11. No fixed volume and no fixed shape
gaseous state
Density
Ion
Stiffness
12. Fixed volume but take the shape of their container
liquid state
Stiffness
Mixture
Ionic bond
13. Hydrogen bond - van der Waals bond
Secondary bond
Ion
Metallic bonding
Toughness
14. A substance made of only one element or compound
Covalent bond
Pure substance
Metal
Bond
15. A positively or negatively charged atom or molecule caused by he loss or gain of electrons from an atom or atoms
Thermal expansion
Element
Secondary bond
Ion
16. This is the measure of a material's ability to conduct electricity. lower resistivity conducts electricity well
Ceramics
Electrical resistivity
Ionic bond
Atom
17. 1)reinforced plastics 2)Metal- matrix composites 3)Ceramic- matrix composites 4)sandwich structures 5)concrete
classification of Metals
classification of Composites
Secondary bond
Solid state
18. Natural wood and manmade
Ductility
classification of Ceramics
Alloy
Timber
19. Caused by an attraction between the positively charged metal atom nuclei and the negatively charged cloud of free electrons. Free electron allows metals to be a good thermal and electrical conductors and let the bond not fixed in position
classification of polymeric
Van der Waals bond
Ion
Metallic bonding
20. A measure of how fast heat is conduct through a slab of material with a given temperature difference across the slab. Unit: W/m C (W = watts - m = metres - C = Celsius)
Thermal conductivity
Metal
classification of Ceramics
Hardness
21. Formed when the fluctuating electrostatic charge in adjacent atoms of different molecules produces a weak electrostatic force between the molecules. Also present as a secondary bond between the long- chain molecules of polymers.
Plastics
Atom
Bond
Van der Waals bond
22. A substance formed by the combination of elements in fixed proportions
Metallic bonding
Mixture
Compound
Secondary bond
23. The ability of a material to withstand pulling forces
Ductility
Tensile strength
classification of polymeric
Stiffness
24. A substance made of two or more substances that can be separated by physical means - ie not chemically bonded together
classification of Composites
Bond
Atom
Mixture
25. V = IR (V= voltage - I = current - R = resistance). unit - Ohms
OHMS Law
Thermal expansion
Pure substance
gaseous state
26. A mixture that contains at least one metal. This can be a mixture of metals or a mixture of metals and non - metals
Thermal conductivity
Alloy
Tensile strength
Metal
27. Mass per unit volumn of a material (D = M/V) unit : kg/m3
Food
Density
classification of polymeric
Metallic bonding
28. The smallest part of an element that can exist chemically
Tensile strength
Secondary bond
Van der Waals bond
Atom
29. Bond that shares electrons in order to complete part- filled shells
Covalent bond
Food
Plastics
Composite
30. 1) Thermoplastics plastics 2) Thermoset plastics 3) Elastomers
Composite
Ductility
Electrical resistivity
classification of polymeric
31. Bond between adjacent oppositely charged ions
Thermal expansion
Ionic bond
Alloy
Thermal conductivity
32. A substance that cannot be decomposed into simpler substances
Metal
Element
Thermal conductivity
gaseous state
33. Fixed volume and fixed shape
Ceramics
Pure substance
Plastics
Solid state
34. Two or more atoms which are normally bonded together covalently
Element
Thermal expansion
Bond
Molecule
35. Earthenware - porcelain - stoneware and glass
Thermal conductivity
liquid state
Ion
Ceramics
36. The ability of a material to resist the propagation of cracks
Metallic bonding
Toughness
Thermal expansion
classification of polymeric
37. A measure of the degree of increase in dimension when an object is heated. This can be measured by an increase in the length (m) - area (m2) or volume (m3). The expansivity can be measured as a fractional increase in dimension per Kelvin increase in
Ductility
Pure substance
Thermal expansion
Alloy