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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. Fixed volume but take the shape of their container
Secondary bond
Bond
Ductility
liquid state
2. 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
Thermal expansion
Density
Metallic bonding
Van der Waals bond
3. Fixed volume and fixed shape
Ion
Composite
Solid state
Ceramics
4. A force of attraction between particles
Electrical resistivity
Bond
Toughness
Food
5. 1)reinforced plastics 2)Metal- matrix composites 3)Ceramic- matrix composites 4)sandwich structures 5)concrete
Density
classification of Composites
Ceramics
Covalent bond
6. A mixture that contains at least one metal. This can be a mixture of metals or a mixture of metals and non - metals
Alloy
Toughness
classification of Metals
Hardness
7. The ability of a material to withstand pulling forces
Thermal expansion
Alloy
Tensile strength
Covalent bond
8. A substance that cannot be decomposed into simpler substances
Ductility
Element
Composite
Compound
9. Natural wood and manmade
Bond
Timber
Hardness
Composite
10. V = IR (V= voltage - I = current - R = resistance). unit - Ohms
Secondary bond
OHMS Law
Plastics
Compound
11. Bond between adjacent oppositely charged ions
classification of polymeric
Secondary bond
classification of Composites
Ionic bond
12. Ferrous and non - ferrous
classification of polymeric
Metal
gaseous state
Van der Waals bond
13. The smallest part of an element that can exist chemically
Atom
Hardness
Metal
classification of Composites
14. A substance made of two or more substances that can be separated by physical means - ie not chemically bonded together
Metal
OHMS Law
Mixture
classification of polymeric
15. A substance formed by the combination of elements in fixed proportions
classification of Ceramics
Density
Bond
Compound
16. A mixture composed of two or more substances (materials) with one substance acting as the matrix or glue
Composite
Metal
liquid state
Toughness
17. Vegetable and meat origin
Alloy
Ceramics
Food
Bond
18. Two or more atoms which are normally bonded together covalently
Tensile strength
Food
Electrical resistivity
Molecule
19. 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)
Hardness
Atom
Plastics
Thermal conductivity
20. 1) Thermoplastics plastics 2) Thermoset plastics 3) Elastomers
classification of polymeric
Alloy
Secondary bond
Thermal expansion
21. The resistance a material offers to penetration of scratching
Hardness
liquid state
Alloy
Pure substance
22. The ability of a material to resist the propagation of cracks
Compound
Toughness
Composite
classification of Composites
23. 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)
Hardness
classification of Metals
classification of Composites
Molecule
24. Hydrogen bond - van der Waals bond
Metal
Molecule
gaseous state
Secondary bond
25. Earthenware - porcelain - stoneware and glass
Element
Ceramics
Ionic bond
classification of Ceramics
26. 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.
classification of Ceramics
Van der Waals bond
OHMS Law
Composite
27. 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
gaseous state
Pure substance
Ceramics
Metallic bonding
28. The resistance of an elastic body to deflection by an applied force
Stiffness
liquid state
Secondary bond
Pure substance
29. A positively or negatively charged atom or molecule caused by he loss or gain of electrons from an atom or atoms
Ion
Pure substance
Timber
Element
30. Mass per unit volumn of a material (D = M/V) unit : kg/m3
Ceramics
classification of polymeric
liquid state
Density
31. No fixed volume and no fixed shape
Ion
Metallic bonding
Hardness
gaseous state
32. The ability of a material to be drawn or extruded into a wire or other extended shape.
Food
Ceramics
Ductility
Compound
33. Bond that shares electrons in order to complete part- filled shells
Hardness
Covalent bond
liquid state
classification of Metals
34. This is the measure of a material's ability to conduct electricity. lower resistivity conducts electricity well
Density
Ion
Electrical resistivity
Stiffness
35. Thermosets and thermoplastics
Solid state
Toughness
liquid state
Plastics
36. A substance made of only one element or compound
Van der Waals bond
liquid state
Pure substance
Thermal conductivity
37. 1) glasses 2) glass ceramics 3) Graphite 4)Diamond
classification of Ceramics
Solid state
Covalent bond
Ion