4596576
Questão 1
Questão
Solution mining is an example of [blank_start]liquid[blank_end] mining.
Responda
-
liquid
Questão 2
Questão
The boiling point of Oxygen is -196ºC
Responda
- True
- False
Questão 3
Questão
The formula for Ammonia is NH3?
Responda
- True
- False
Questão 4
Questão
The formula for sodium sulfate is Na2CO3?
Responda
- True
- False
Questão 5
Questão
a [blank_start]vacuum[blank_end] is an example of nothing.
Responda
-
vacuum
Questão 6
Questão
If lithium has an atomic number of 3 and a mass number of 7, the correct number of protons, neutrons, and electrons, respectively, is:
Responda
-
3, 4, 3
-
4, 3, 3
-
3, 3, 4
-
4, 4, 3
Questão 7
Questão
If Magnesium has an atomic number of 12 and a mass number of 24, the correct number of protons, neutrons, and electrons, respectively, is
Responda
-
8, 10, 12
-
12, 12, 12
-
12, 24, 12
-
24, 12, 12
Questão 8
Questão
The chemical element number for Potassium is [blank_start]19[blank_end]
Responda
-
19
Questão 9
Questão
atomic number = number of [blank_start]protons[blank_end].
Responda
-
protons
Questão 10
Questão
Which of the following are organic compounds? (3 answers)
Responda
-
C2H4
-
NaHCO3
-
C2H5OH
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CH3COOH
-
C02
-
CuCO3
Questão 11
Questão
Metal atoms form positive ions (cations) by passing [blank_start]electrons[blank_end] to non-metal atoms.
Responda
-
electrons
Questão 12
Questão
A metal ion has fewer electrons (-) than protons (+), so has an overall positive charge.
Responda
- True
- False
Questão 13
Questão
Metal atoms transfer outer electrons to non-metal atoms, leaving a shell of [blank_start]eight[blank_end].
Responda
-
eight
Questão 14
Questão
Group 1 elements have how many electrons in their outer shell?
Responda
-
2
-
1
-
4
-
3
Questão 15
Questão
The chemical number for Manganese (Mn) is
Responda
-
15
-
25
-
35
-
45
Questão 16
Questão
When non-metals react with each other they form covalent bonds, not ionic. The atoms share enough [blank_start]electrons[blank_end] to achieve the noble gas structure.
Responda
-
electrons
-
protons
-
neutrons
-
covalent bonds
Questão 17
Questão
Which type of bonding does chlorine gas (Cl2) and ethanol (C2H5OH) have?
Responda
-
Covalent
-
Ionic
Questão 18
Questão
An ion is
Responda
-
A strong atom
-
A weak atom
-
An atom that has lost or gained electrons
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An atom that has lost or gained neutrons
Questão 19
Questão
A compound will have an ionic structure if it is made from
Responda
-
An alkali metal
-
A metal with one or more non-metals
-
Only metals
-
Only non-metals
Questão 20
Questão
When Sodium reacts with Chlorine, Sodium will
Responda
-
Share electrons with Chlorine
-
Swap electrons with Chlorine
-
Give one electron to Chlorine
-
Take one electron from Chlorine
Questão 21
Questão
The giant ionic structure of an ionic compound is called an ionic lattice.
Responda
- True
- False
Questão 22
Questão
Ionic compounds are brittle and shatter when hit.
Responda
- True
- False
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