WorksheetsChemistry
Total questions: 23
Worksheet time: 11mins
二氧化硫 (Sulphur dioxide)
SO2
Cl2
Ca(OH)2
KOH
三氧化硫 (Sulphur trioxide)
SO3
CHNO3
Ca(OH)2
SO2
氯气 (Chlorine)
KOH
CHNO3
SO3
Cl2
氢氧化钙 (Calcium Hydroxide)
Ca(OH)2
KOH
H2CO3
SO2
水 (water)
O2
HCl
H2O
N2
氦 (Helium)
H
He
Si
Mg
铍 (Beryllium)
Ca
Be
N
Na
硫 (Sulfur)
B
C
S
H
氩 (Argon)
Ar
Na
Mg
Be
An electron is
positively charged
neutral
negatively charged
atomic number is
the number of protons
the number of electrons
the number of neutrons
the location of an atom on the periodic table
Atomic Mass is the number of
protons and neutrons in the nucleus of an atom
protons and electrons in the nucleus of an atom
neutrons and electrons in the nucleus of an atom
An elements is
a substance that cannot be split into simpler substances
a substance that can be split into simpler substances
The basic unit of matter is the
cell
atom
compound
element
Bonding in diamond is
covalent
ionic
dipole
metallic
How many protons in an atom of sodium (Na)?
11
8
2
C is element
Carbon
Calcium
Chlorine
2 or more elements bonded together is
Compound
Mixture
Chemical formula
Does this particle view show an element or a compound?
element
compound
镁属于什么结构？
巨型金属结构
巨型共价结构
巨型离子结构
简单分子结构
methods of extraction
electrolysis of molten metal ore
heating the metal ore with carbon
Heating the metal ore alone
Physical separation
Is NH4+ only polyatomic cation
Yes
No
H2O2 refers
Dihydrogen dioxide
Hydrogen peroxide
Hydrogen oxide
Water
