Metals
What are metals?
Metals are any of various substances(as gold, tin, copper) that have a more of less shiny appearance.
What are non-metals?
Non-metals are a chemical element(as boron,carbon,or nitrogen) that lacks the characteristics of a metal and that is able to form anions, acidic oxides, acids.
What are metalloids?
Metalloids are chemical elements that have properties of both metals and nonmetals sometimes referred to as semiconductors
A physical property that describes the way the surface of a substance shines or reflects light, ranging between metallic (shiny) and nonmetallic (dull).
Luster
Why does a metal plate melt ice more quickly than a plastic one?
We must consider the heat conductivity of both the metal and nonmetal plates. The physical properties of the plates determine how well they conduct heat. The heat from your hand or the fire will warm the metal plate and the ice much more quickly because the metal plate is a conductor. Heat energy will travel quickly and efficiently through it. The nonmetallic plastic plate will not conduct heat as well.
What metal is the hardest metal?
Tungsten
Of these non-metals, which one is likely to be the least reactive?
A.Oxygen (O)
B.Sulfur (S)
C.Chlorine (Cl)
D.Fluorine (F)
B.Sulfur (S)
Which of the following elements is a metalloid?
A. Manganese
B.Boron
C.Bismuth
D.Aluminium
B. Boron
A physical property that describes the ability of a material to be permanently reshaped without breaking or cracking.
Malleability
A student wanted to determine if a certain substance was a metal, nonmetal, or metalloid. Which of the following would NOT be helpful in making this determination?
C.Determining whether the material has a shiny luster
Where are the metals located on the periodic table?
on the left
When looking across the periodic table from left to right, which is the first group that contains non-metals?
A. Group 2
B. Group 7
C. Group 14
C. Group 14
Are metalloids brittle or hard?
Metalloids Are Brittle and Easily Broken.
Elements that are typically solid, shiny, malleable, and good conductors of heat and electricity; includes most elements.
Metals
What was the first metal ever made?
copper
Where are the most reactive non-metal elements found on the periodic table?
A. At the top of group 17
B. At the bottom of group 17
C.At the top of group 18
at the top of group 17
Why is it difficult to definitely classify an element as a metalloid based solely on it properties?
metalloids exhibit properties that are intermediate between metals and non-metals
Elements that are typically not shiny, not malleable, and poor conductors of heat and electricity; usually gases or brittle solids.
Non- metals
Who made the periodic table?
A. Antoine Lavoisier
B. Johann Wolfang Döbereiner
C. John Newlands
D. Henry Moseley
E. Dmitri Mendeleev
E. Dmitri Mendeleev
In 1869, Russian chemist Dmitri Mendeleev created the framework that became the modern periodic table, leaving gaps for elements that were yet to be discovered.
What atomic properties contribute to a metal's hardness?
atomic size
A student is working with four different solid substances: sodium (Na), calcium (Ca), copper (Cu), and iodine (I). Which substance is most likely to break into smaller pieces.
A. Sodium
B. Calcium
C. Copper
D. Iodine
D. Iodine
their electrons are more tightly bound to their nuclei than are those metallic conductors
Elements that have properties of both metals and nonmetals; sometimes referred to as semiconductors.
Metalloids.
Who is Alan Williams?
A. A metal sculptor
B. A technologist
C. A Psychologist
D. Epidemiologist
A. A metal sculptor.
Alan Williams is an English metal sculptor who works out of Brighton, England. He uses recycled materials to make sculptures of land and sea creatures, including chameleons and birds. He became interested in welding when he was 16 after watching an artist on TV make a sculpture from metal.