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