Chemical Symbols
What is the element with the chemical symbol Si ?
What is the chemical symbol for carbon dioxide?
CO2
what order is the periodic table of elements listed by?
Oxygen is an example of:
A element
B molecule
C compound
D mixture
A - element
filter paper is a common material used in what separation method?
A magnetic separation
B distillation
C filtration
D evaporation
C - filtration
How many atoms in C4H10
14 atoms
what do periods represent?
the rows (horizontal) of the periodic table.
A - a compound
B - an element
C - a mixture
D - an atom
A - a compound
what is the name of the large particles that cannot pass through filter paper.
residue.
what is the chemical symbol for silver?
Ag
How many elements in C2H6OH12?
3 elements
what do the groups represent?
the columns (vertical) of the periodic table.
O2 is an example of a/an...
element.
what is the name of the liquid that passes through the filter paper during filtration?
filtrate
How do you calculate the number of neutrons an element will have?
atomic mass - atomic number (number of protons)
what is the common name for dihydrogen monoxide?
water (H2O)
what's a fast way of figuring out if the atomic number is at the top of the element box or the atomix mass?
The atomic mass if always a bigger number.
NaCl is an example of a/an...
compound
what type of separation uses boiling points to separate mixtures?
fractional distillation
how many neutrons would isotope Carbon-14 have?
8 neutrons (14 - 6)
what is the chemical name for: CO ?
carbon monoxide
in order of least to most reactive, organise these three elements:
rubidium, sodium, lithium, potassium
lithium --> sodium --> potassium --> rubidium
to test is a substance is pure... a pure substance will always have the same ________ ________.
boiling point.
which type of evaporation will give larger crystals?
A - fast evaporation
B - slow evaporation
C - assisted evaporation
D - distilled evaporation
B - slow evaporation