Este test está cronometrado.
Tienes 45 minutos para completar 22 preguntas de este test.
Solution mining is an example of mining.
The boiling point of Oxygen is -196ºC
The formula for Ammonia is NH3?
The formula for sodium sulfate is Na2CO3?
a is an example of nothing.
If lithium has an atomic number of 3 and a mass number of 7, the correct number of protons, neutrons, and electrons, respectively, is:
3, 4, 3
4, 3, 3
3, 3, 4
4, 4, 3
If Magnesium has an atomic number of 12 and a mass number of 24, the correct number of protons, neutrons, and electrons, respectively, is
8, 10, 12
12, 12, 12
12, 24, 12
24, 12, 12
The chemical element number for Potassium is
atomic number = number of .
Which of the following are organic compounds? (3 answers)
C2H4
NaHCO3
C2H5OH
CH3COOH
C02
CuCO3
Metal atoms form positive ions (cations) by passing to non-metal atoms.
A metal ion has fewer electrons (-) than protons (+), so has an overall positive charge.
Metal atoms transfer outer electrons to non-metal atoms, leaving a shell of .
Group 1 elements have how many electrons in their outer shell?
2
1
4
3
The chemical number for Manganese (Mn) is
15
25
35
45
When non-metals react with each other they form covalent bonds, not ionic. The atoms share enough ❌ to achieve the noble gas structure.
Which type of bonding does chlorine gas (Cl2) and ethanol (C2H5OH) have?
Covalent
Ionic
An ion is
A strong atom
A weak atom
An atom that has lost or gained electrons
An atom that has lost or gained neutrons
A compound will have an ionic structure if it is made from
An alkali metal
A metal with one or more non-metals
Only metals
Only non-metals
When Sodium reacts with Chlorine, Sodium will
Share electrons with Chlorine
Swap electrons with Chlorine
Give one electron to Chlorine
Take one electron from Chlorine
The giant ionic structure of an ionic compound is called an ionic lattice.
Ionic compounds are brittle and shatter when hit.
