Test created at: 2020-01-16 by Adriele; number of questions: 15. Last time modified: 2020-01-19.
If you are not ready, you could first read the literature (https://en.wikipedia.org/wiki/Metal, new window) and do the test later.
Q1: What is true about metals?
Q2: Which of the chemical elements is NOT a metal?
Q3: Approximately how many percent of the Earth's crust is composed by the metals?
Q4: The solid or liquid state of metals largely originates in the capacity of the metal atoms involved to readily "gain" their outer shell electrons.
Q5: When reacting with oxygen, most of the metals will form:
Q6: Which metal does NOT react with oxygen at all?
Q7: What is an alloy?
Q8: The purpose/purposes of making alloys is generally to make the metals:
Q9: The usual formulation of the alloy nickel silver is 60% copper, 20% nickel and 20% zinc
Q10: What are the main characteristics of a heavy metal?
Q11: Which statement is true?
Q12: During the World War I, major governments demanded large shipments of ________ for light strong airframes.
Q13: Shortly after the World War II, super alloys were developed for use in:
Q14: 95% of the energy used to make aluminium from bauxite ore is saved by using recycled material.
Q15: Regarding to heat conductivity of metal is correct to affirm that: