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1Nearly all of an atoms mass is in its [blank_start]nucleus[blank_end].
Atoms contain the [blank_start]same number[blank_end] of protons as electrons.
The total positive charge from protons is [blank_start]cancelled[blank_end] by the total negative charge from electrons.
The overall charge of an atom is [blank_start]zero[blank_end] - an atom is [blank_start]neutral[blank_end].- Anucleus
- Bsame number
- Ccancelled
- Dzero
- Eneutral
2Which of the following is false?
- AEvery atom of the same element has the same number of protons
- BThe periodic table lists elements in order of the number of protons in the nucleus.
- CDifferent elements can have the same number of protons.
- DIsotopes are atoms of the same element with the same number of protons and electrons but a different number of neutrons and different masses.
3[blank_start]Mass[blank_end] Number (Nucleon number) [blank_start]A[blank_end]
= number of protons + number of [blank_start]neutrons[blank_end]
[blank_start]Atomic[blank_end] number ([blank_start]Proton[blank_end] number) [blank_start]Z[blank_end]
= number of protons- AMass
- BA
- CAtomic
- DZ
- EX
- Fneutrons
- Gelectrons
- HProton
- IPositron
- JM
4Do different isotopes react differently?
- AYes
- BNo
5Isotopes.
There may be differences in [blank_start]physical properties[blank_end] - with higher-mass isotopes of an element having a [blank_start]higher[blank_end] melting point, a [blank_start]higher[blank_end] boiling point and density - but [blank_start]chemical reactions[blank_end] are the same.- Achemical reactions
- Bphysical properties
- Cappearance
- Dhigher
- Eequal
- Flower
- Ghigher
- Hlower
- Iequal
- Jappearance
- Kchemical reactions
- Lphysical properties
6What is an ion.
- AA charged species. The number of protons is different from the number of neutrons.
- BA charged species. The number of electrons is different from the number of protons.
- CAn uncharged species. The charges of subatomic particles balanced.
7Postive ions, or [blank_start]cations[blank_end], are atoms with [blank_start]fewer[blank_end] electrons than protons.
Negative ions, or [blank_start]anions[blank_end], are atoms with more [blank_start]electrons[blank_end] than protons.- Acations
- Bcathodes
- Cfewer
- Dmore
- Ean equal number of
- Fanions
- Gonions
- Helectrons
- Ineutrons
8Which of the following is false?
- ACarbon 12 is the international standard for the measurement of atomic masses
- BThe unit for the mass of subatomic particles is the atomic mass unit, u.
- CThe mass of one atomic mass unit is equal to 1 /12 th of the mass of carbon 14
9Relative isotopic mass is the mass of an [blank_start]isotope[blank_end] relative to 1/12th of the mass of an atom of [blank_start]carbon 12[blank_end].
Relative atomic mass is the weighted mean mass of an [blank_start]atom[blank_end] of an element relative to 1/12th of the mass of an atom of [blank_start]carbon 12[blank_end].- Aisotope
- Bcarbon 12
- Catom
- Dcarbon 12
10What is the charge of an ammonium ion?
- A+1
- B-1
- C0
11What is the charge of the following ions, NO3, NO2, HCO3, MnO4 ?
- A+1
- B-1
- C+2
12What is the charge of the following ions, CO3, SO4, SO3, CrO2 ?
- A+1
- B-2
- C+2
13What is the charge of PO4?
- A-3
- B-1
- C-2
14Chemists use a substance called the [blank_start]amount of substance[blank_end] to count the number of particles in a substance , measured in a unit called the [blank_start]mole[blank_end]. One mole is the amount of substance that contains 6.02 x 10^23 particles this is known as [blank_start]Avogadro's[blank_end] constant, it is the amount number of particles in 12g of [blank_start]carbon 12[blank_end].
- Aamount of moles
- Bamount of substance
- Camount of matter
- Dmole
- Esubstan
- Fkelvin
- GPascals
- HCarbon 12
- IAvogadro's
- Jcarbon 12
- Knitrogen 12
- LMagnesium 24
15The molecular formula is the [blank_start]actual[blank_end] number of atoms in a compound.
The empirical formula is the [blank_start]simplest whole number ratio[blank_end] of atoms in a compound.- Aactual
- Bsimplest whole number ratio
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- AS - Level Chemistry Quiz on Untitled, created by Alice Butterworth on 10/06/2016.
- Author
- Alice Butterworth
- Language
- English
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