WorksheetsChemistry Unit One PreTest TEST
Total questions: 10
Worksheet time: 10mins
Which element has 14 neutrons, 10 protons and 10 electrons?
Silicon
Manganese
Neon
Fluorine
A student places a solid ice cube on the counter in the lab, and the ice cubes melts to liquid water. This is an example of a physical or chemical change?
Physical change
None, this is all made up stuff
Chemical change
Both types of changes.
The correct mass of Copper-67 is?
64
29
67
63.546
Atom 1 has 11 p+, 12 e- and 13 n0, what element is this?
Mg
Al
Na
V
Identify the element from its mass spectrum graph.
Te
Co
Cr
Mn
What do isotopes of the same element have in common?
same number of electrons
different number of protons
different number of neutrons
same number of protons
An element has 3 isotopes, X-2 (50%), X-3(25%) and X-5(25%), calculate the average atomic mass of this element.
3.33
100
3
2.5
How many more neutrons does F-22 have than protons?
10
13
9
22
An atom is made mostly of?
protons
electrons
neutrons
empty space
Rutherford's experiment that lead to the discovery of the proton and dense nucleus of the atom was.
Cathode Ray Tube
Fortnite
Aluminum Foil
Gold Foil
