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