NEW
Font size
WorksheetsSummer School Physical Science - CH 20 - Section III Quiz
Total questions: 10
Worksheet time: 5mins
An allotrope of carbon that is soft and can be used as a lubricant is _________.
silicon
diamond
sand
graphite
Different forms of the same element that have different properties because of different atom arrangements are called ____________.
allotropes
carbons
silicons
graphites
An allotrope of carbon that is hard and is often used in jewelry is ________.
silver
diamond
quartz
graphite
Substances that conduct an electric current only under certain conditions are most likely to be _________.
metals
nonmetals
metalloids
noble gases
Synthetic elements are found in which of the following groups?
actinides
alkali metals
oxides
halogens
All synthetic elements ____________.
are used in smoke detectors
are needed by the human body
are not typically found on Earth
have more than 92 protons
A synthetic element that is used in smoke detectors is _________.
americium
sodium
technetium
aluminum
Any element with an atomic number greater than 92 is a _______.
transuranium element
lanthanide
transition element
halogen
Elements that lie along the stair-step line of the periodic table are _________.
liquids
metals
metalloids
radioactive
Most mixed groups of elements are named in what way?
Their similar qualities
Named for the top most element
Named for the bottom most element
Named after the scientist that first discovered one of the elements in that group
