0
Add your answer:
Earn +20 pts
Who has more and less power than daimyos?
Nobody. If they have more power, then they cannot have less. And if they have less, they cannot have more. So nobody can have more AND less.
Is 32 quarts more than or less than 9 gallons?
less
The more you have the less you see?
The more of it you have the less of it you see
Is one quarter more or less than one third?
one quarter is less than one third
What is symbol for more or less?
It depends on what you mean by "more or less". If more or less is used to indicate approximately or nearly equal to, then the symbol used is ≈ which look like a wriggly equals symbol. If more or less is used for more than or less than but not equal to, then you would use an equals sign with a diagonal line through it ≠ which stands for "not equal to" You are right but if it's more than or less than it would look like this (less than)<(more) or (more than)>
Do different materials expand and contract and different rates?
Yes, different materials expand and contract at different rates due to their unique atomic and molecular structures. For example, metals tend to expand and contract more significantly with temperature changes compared to materials like glass or ceramics. This property is important to consider in engineering and construction to avoid structural issues.
Why are metals better conductors than ceramics?
Metals have a higher density of free electrons which can move easily, allowing for efficient conduction of heat and electricity. In contrast, ceramics have a more fixed atomic structure with fewer free electrons, limiting their ability to conduct heat and electricity effectively.
Why has not the earth's crust blown off due to the expansion of metals under the crust?
because it streatched more as the metals expand
Why do metals expand when hot and contract when cooled?
When metals are heated, the atoms within the metal vibrate more rapidly, causing them to take up more space and the metal to expand. When the metal is cooled, the atoms vibrate less, allowing them to move closer together, resulting in contraction. This expansion and contraction is due to the changes in the spacing and movement of the atoms within the metal structure.
Solid metals undergo greater thermal expansion than liquids do?
false
Do ceramics conduct electricity?
Certain types of ceramics like chromium dioxide, conduct electricity just like metals do. Silicon carbide is a semi-conductor. However, there are also other types of ceramics like aluminum oxide do not conduct electricity at all.
How does activity series of metals reflect the stability of metals?
The metals highest on the list are the least stable.
What are metals that expand and contract?
Metals such as aluminum, copper, and steel expand and contract in response to changes in temperature. This property is known as thermal expansion, where the metal will expand when heated and contract when cooled. This behavior is important in various applications, including building construction and engineering.
What are the characteristics of ceramics?
Physical properties means the behavior of materials in response to physical forces other than mechanical, such as; Volumetric, thermal, electric and electrochemical properties. Most Ceramics are lighter than metals but heavier than polymers. Most ceramics have a higher melting point than most metals as it is that some ceramics such as China can with stand high temperatures to about 1200 degrees centigrade. Ceramics also has lower Electrical and Thermal Conductivity than most metals but the range of value is greater in ceramics permitting some ceramics to be used as insulators, for example Porcelain insulators and others as conductors like Lithium-ion conducting glass-ceramics and oxide ceramics. Thermal expansion is another physical property of ceramics, Ceramic thermal expansion coefficients are less than those of metals but effects are more damaging in ceramics bringing about cracks and other failures(Thermal shock and thermal cracking) as for ceramic materials with relatively high thermal expansion and low thermal conductivity however there is glass ceramics that has low thermal expansion thus resisting thermal shock and thermal cracking, for example Pyrex glass ceramics. Thus the physical properties being but not limited to permeability, elasticity, considerable strength, hardness, brittleness, resistance to chemical attack and thermal shock.
Is a semi metal hard?
Their hardness will be less than that of metals but more than that of non metals. Hence the name, semi metals or metalloids.
What are the types of materials in material science?
Major materials studied in material science include: Composites and nano-composites Carbon fibers Polymers and plastics Alloys and allotropes Supercritical fluids Glass and others Ceramics
Are alkaline-earth metals reactive?
Alkaline-earth metals are less reactive compared to alkali metals, but they still react with water and oxygen to form oxides and hydroxides. They are more reactive than transition metals but less reactive than alkali metals.
