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