WorksheetsThe element chemistry
Total questions: 27
Worksheet time: 16mins
Which is the most hardest?
Diamond
Silicon dioxide
Graphite
Calcium carbonate
The chemical formula for methane is (a)
Which of those are true about technetium?
Its created by the radioactive decay of molybdenum's radioactive isotope.
It was the first artificial element to be created
Its the most reactive in transition metals.
technetium is not an element
Its an alkaline earth metal
Draw the structure of an atom
What is the difference between 2 or more isotopes?
There is no difference
Its a completely different atom
ummm......
The number of neutron or mass number is changed
Is Carbon dioxide an allotrope of carbon
NO!
YES!!!
Which element is the most PRECIOUS (choose wisely!)
Silver
Gold
Platinum
Palladium
Sunflower
alchemy: what is a glyph?
a stats
bondes elements and other stuff with difrent glyph for every use
a cool thing to make a element more decritive
a word you use as a term
List three uses of the metal Platinum.
i need it to do a experiment
(a)
Which of the following is an element?
NaCl
O2
Mg
CO2
Which of the following compounds is not ionic?
NaI
CO2
CaCl2
Na2O
Protons are ..............
positively charged
negatively charged
neutral
The structure of an atom of element X is shown.
In which group of the periodic table is element X?
2
3
5
6
Similar elements have similar properties because they are made of the same atoms.
True
False
The chemical symbol for chlorine is .....................
co
cl
Co
Cl
Carbon dioxide is a _____molecule with two polar bonds.
linear.
Trigonal
pyramidal
None of these
A water molecule has two bonding pairs and two lone pairs of electrons around the oxygen atom. Therefore, it has a _____shape.?
Linear
Trigonal
Bent
None of these
alchemy: what are the 4 cardinal elements?
lead, tin, gold, mors
fire, earth, air, water
25. Which of the following molecules has one lone pair of electrons?
CH4
H2O
HCl
NH3
The property of making a ringing sound.
Malleable
Sonorous
Shiny
Which name is given to a pure substance made from more than one type of atom that are chemically joined?
mixture
element
compound
ion
When sulfur is heated it undergoes a ......1...... change as it melts.
Further heating causes the sulfur to undergo a ......2...... change and form sulfur dioxide.
Which words complete gaps 1 and 2?
physical , chemical
chemical , physical
chemical , chemical
physical , physical
What is the type of the following reaction?
Br2 + 2KI ---> 2KBr + I2
synthesis
combustion
double displacement
single displacement
do you think you can be in a lab?
yes, i have been there
when i grow up
no, im too young
no, i am not a scientest major
i have been there but i was too young to do any thing
Which of the following is the weakest?
hydrogen bond
dipole interaction
polar covalent bond
ionic bond
Which of these compounds would not have covalent bonds?
NO2
. N2O4
K2O
H2O
