The number of neutrons can be calculated by subtracting

the atomic number from the mass number

the mass number from atomic number

Test

Atomic Structure

Niamh Taylor 15 preguntas 5,0 (2 valoraciones)

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1An element is a pure substance which cannot be made into any simpler substance by chemical means.
1. AVerdadero
2. BFalso
2Columns are called periods and rows groups.
1. AVerdadero
2. BFalso
3Protons have a .............. charge.
1. Apostive
2. Bnegative
4Electrons have a ............. charge.
1. Apositive
2. Bnegative
5The atoms of an element contain a equal numbers of protons and electrons and so have no overall charge.
1. AVerdadero
2. BFalso
6Every element has a unique atomic number. This is the number of electrons in the nucleus of each atom.
1. AVerdadero
2. BFalso
7Mass number =
1. Anumber of protons + number of neutrons
2. Bnumber of neutrons + number of electrons
3. Cnumber of electrons + number of protons
8The number of neutrons can be calculated by subtracting
1. Athe mass number from atomic number
2. Bthe atomic number from the mass number
9Metals form [blank_start]positive[blank_end] ions.
Non-Metals form [blank_start]negative[blank_end] ions.
1. Apositive
2. Bnegative
10In a chloride ion the atomic number gives us 17 protons.
The negative charge means we have one more electron than protons so we have 18 electrons.
The mass number minus the atomic number gives us 18 neutrons.
1. AVerdadero
2. BFalso

Descripción: National 5 (Unit 1) Chemistry Test sobre Atomic Structure, creado por Niamh Taylor el 16/12/2015.
Autor: Niamh Taylor
Idioma: English
Visitas: 34
Etiquetas: chemistry unit 1 national 5
Valoración: 5,0 de 5 · 2 valoraciones
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