WorksheetsPeriodic elements quiz
Total questions: 11
Worksheet time: 6mins
What is the heaviest NATURAL element and what is its atomic number
thallium 81
ogneseon 118
cobalt 27
neodymium 60
uranium 92
What is the last element and its number OVERALL
thallium 81
cobalt 27
ogneseon 118
uranium 92
neodymium 60
what element groups are separated from the rest of the table?
alkali metals
transition metals
metalloids
lanthanides
actinides
who created the periodic table
Dimitree Mandeeleve
Robert Bunson
Lothar Meyer
what is an element
water, air, earth, fire
a substance made of only one type of atom
a substance
a mixed substance
which of these are reactive non-metals
helium
neon
argon
carbon
nitrogen
Which of these is a noble gas?????
hydrogen
helium
nitrogen
oxygen
lithium
how many elements have unknown properties??????
11
9
118
2
how many lanthanides are there??
12
90
15
45
what element has the atomic symbol K?
krypton
potassium
tantulum
what percentage of the air is nitrogen???????
12%
9%
21%
0.05%
78.084%
