Atomic Structure & The Periodic Table
What is an atom?
The smallest part of an element that can exist.
What is Dalton's model of the atom?
Atom as a solid sphere that could not be divided into smaller parts.
What is the plum pudding model of the atom?
A sphere of positive charge with negative electrons embedded in it.
What did scientists discover in the alpha scattering experiment?
Some alpha particles were deflected by the gold foil - this showed that an atom's mass and positive charge must be concentrated in one small space (the nucleus).
What is the nuclear model of the atom?
An atom that nearly all of its mass is concentrated in a dense, positively charged nucleus at the center, with electrons orbiting around it.
What did Niels Bohr discover?
Electrons orbit in fixed energy levels (shells).
What did James Chadwick discover?
Uncharged particle called the neutron.
Where are protons and neutrons?
In the nucleus.
What is the relative mass of each subatomic particle?
proton: 1, neutron: 1, electron: 0
What is the relative charge of each subatomic particle?
proton: +1, neutron: 0, electron:-1
How can you find out the number of protons in an atom?
By looking at the atomic number on the Periodic Table.
How can you calculate the number of neutrons in an atom?
Mass number - atomic number.
Why do atoms have no overall charge?
Atoms have an equal number of positive protons and negative electrons.
How many electrons would you place in the first, second, and third shells?
first: 2, second: 8, third: 8
What is an element?
A substance made of one type of atom.
What is a compound?
A substance made of more than one type of atom chemically joined together.
What is a mixture?
Two or more substances not chemically combined.
What are isotopes?
Atoms of the same element (same number of protons) with different numbers of neutrons.
What is relative mass?
The average mass of all the atoms of an element.
What are the four physical processes that can be used to separate mixtures?
Filtration, crystallisation, distillation/fractional distillation, chromatography.
How is the modern Periodic Table ordered?
By atomic number.
How were the early lists of elements ordered?
By atomic mass.
Why did Mendeleev swap the order of some elements?
To group them by their chemical properties.
Why did Mendeleev leave gaps in his Periodic Table?
Leave room for elements that had not yet been discovered.
Why do elements in a group have similar chemical properties?
Have the same number of electrons in their outer shell.
Where are metals and non-metals located on the Periodic Table?
Metals to the left and non-metals to the right.
What name is given to the Group 1 elements?
Alkali.
What name is given to the Group 7 elements?
Halogens.
What name is given to the Group 0 elements?
Noble gases.
Why are the noble gases inert?
They have full outer shells so do not need to lose or gain electrons.
| Quiz |
|---|
| Filosofie begrippen ethiek & Oosterse filosofie |
| ingles |
| scuola lirica sicilianaLA SCUOLA SICILIANA
Non sono i primi a fare uso del volgare.
Sono ispirati dai trovatori, a differenza dei quali trattano solo il tema
amoroso, il cosidetto amor cortese.
Nei trovatori è presente una... |
| Fisiologia respiratoria |
| UBUNTUmachine virtualisation |
| myth for 6th grade |
| NEURO CM2 |
| Duitse woorden |
| am kort |
| phrasal verbs |
| filosofia |
| toets |
| Midterms: PCM |
| prataique de la langue voc ang |
| italin phonetics |
| 18th century |
| Robinson Crusoe |
| QUIZ #1 ANSWER KEY REVIEWER |
| Ellära |
| DEV CM1 |
| Mitosis |
| CHAP 53 BLED |
| Health science |
| CHAPTER 4: ASSESSMENT AND DIAGNOSIS |
| CHAP 56 BLED |
| Japonés |
| welfare state |
| Maslow |
| mercados financieros internacionales |
| thai verbs |
| geografia UNAM |
| Endocrine System |
| Quimica |
| shdh |
| latino |
| anglais |
| biolo |
| Soci Midterm 2 |
| patologia toracica cardiovascular |
| éducation physique |
| Grunddaten der Gestirne des SonnensystemsWichtigste Grunddater der Erde, der Sonne und anderen Planeten in unserem Sonnensystem. |
| SI-EinheitenGeben Sie Basiseinheiten, das Einheitssymbol und das Symbol für die Formel zu der gegebenen Basisgröße an! |
| prefinal ITS |
| Test 2 |
| T2 part 2 |
| Genetics Bio |
| klamotten |
| Sostantivi |
| Procédés stylistiques |
| divorziconsiglio |
| alberialberi |
| fichaEstudar o past simple, o past continuous, present simple e o present continuos. |
| veganvegan |
| Duplicazione del dna |
| 1 Vocabulaire Prononciation |
| yogayoga |
| T2 industrial |
| naturadomande sulla natura |
| 1 Vocabulaire |
| mga gunitang Himagsikan |
| Lingüística tema 1Definiciones |
| Vocabulario |
| higiene - copia |
| Realidade virtual |
| Gaio Mario |
| O GUI e a Relação - Homem máquina |
| I tentativi di riforme dei Gracchi |
| Os ambientes gráficos |
| anglais vocabulaire eco |
| t20_Corriente electricaCorriente electrica, ley de ohm, resistencia,intensidad leyes de de kirchff |
| Dryckeskunskap |
| Micro midterm |
| Psychobiologie - L’audition |
| flashcards |
| Marketing and comunications |
| mouvements littéraires |
| classes grammaticales |
| T Shipping Industry |
| anglais |
| Works of Luna Y Novicio |
| CHAP 29 BLED |
| nov 2024 vocab part 2 |
| nov 2024 vocab |
| sto |
| transpo management ITS |
| engelska |
| ITS PRELIM |
| ITS AUTOMOBILE |
| act of proclamation of philippine Indipendence |
| infanticidio y abortof |
| EMBRIO B1ciclo c
mitosis
mieosis
gastrulación
espermiogénesis
ciclo sexual |
| oxidos basicoses un metal (+) mas no metal (o-2) |
| Science exam |
| h |
| higiene |
| Quiz lymphatic |
| Kartilya ng Katipunan |
| mm34 |
| Mr longs |
| Vocab words |
| Perfil do psicólogo nas intituições sociais é comunitárias |
| Derecho del Trabajo Parte Sustantiva Segundo ParcialUnidades 6 a 10 |
| Parcial |
| Trigonometria 11° ano |
| Otorrino Parcial |
| näringslära 1 och 2 |
| lifejacket pt2 |
| biologiabio |
| Prepositionsuttryck |
| Operationstermer |
| Endoskopitermer |
| Röntgentermer |
| BLED CHAP 57 |
| Sonam250-300 |
| Prepositioner |
| ord/fraserlite bra å veta vissa o är egentligen en lite udda o liknande bokstav |
| BIO Topic 7 |
| Weil Hotel Customer Servicemore about customer service of Weil Hotel |
| Glosor arbetsblad 3 och 4 med böjning |
| ord utan böjningnågra ord utan böjning bá |
| storianana |
| geografíaprimera guerra mundial |
| Get |
| filippa |
| ORG AND MANAGEMENT |
| laboratório de investigação |
| begrepp & betydelse |
| ciencias - copia |
| Cell biology |
| la molecola dell' acqua |
| Preistoria e umanizazione |
| Gli egizi |
| LO4 |
| umanesimo e rinascimento |
| problemi col tre sempliceproblemi con il tre semplice e circonferenza |
| Seances 1-3 |
| parte 2 |
| TOPIK IIorefubtqa del topik |
| Architectures des ordinateursles ordits |
| romanian |
| articles |
| MySQL |
| Midterm Arts Architecture |
| economiastudio |
| Midterm Arts - Sculpture |
| syrors namn |
| Ögon - diagnoser |
| Sociologie de la connaissance |
| Foodfood |
| Midterm exam Arts - Painting |
| Costos |
| English vocab quiz |
| 2 Parcial |
| ciencias |
| Patologías oído externo |
| ¿¿¿WARS??? |
| Flash cards Democracia Autoritatismo y Totalitarismo |
| 2513 Midterm 1 |
| Hipoacusia |
| biomateriales unidad 2 |
| Questions histoire de l'art partie 4-5-6 |
| the hungarian uprising causes, events, consequences and importance |
| Segundo parcial |
| medeltiden |
| Elise |
| tipos de rochas |
| Rode jaartallen geschiedenis par 1.1 tot 1.5 |
| Geschiedenis begrippen par. 1.4 |
| Geschiedenis begrippen par. 1.3 |
| objetivos del plan estratégico de oportunidades- igualdad entre hombres y mujeres.
- eliminar la discriminación por razón de sexo. |
| Solar system glosor engelska - svenska |
| glossor jag inte kunde |
| Bio Unit 1 Test |
| natuur |
| reserach chapter three |
| CELL BIOLOGY HL BIO - copy |
| Solar system vocabularySolar system vocabulary engelska/svenska |
| (CPHN) NUTRITIONAL ASSESSMENT/ RESEARCH |
| INTERNome e Cognome, Ruolo e numero di maglia |
| the cuban missile crisis |
| the cuban revolution |
| hungarian uprising |
| CPHN 2 |
| formule degli indici di posizione |
| indici di posizione |
| Biologi kroppen åk 8 kap 6.4 Skelett mm |
| antropologia della moda |
| tyska glossor, del 2 |
| Sciencei dont know what to write |
| reportaje, artículo de divulgación y mesa redonda |
| propiedades, textuales y marcas discursivas |
| texto y conectores , nexos |
| noticia y cronica |
| ENUMERATION |
| cuento |
| novela |
| IDENTIFICATION |
| TRUE OR FALSE EXAM! |
| Leyenda |
| history |
| chapter two |
| funciones linguisticasquestionario |
| elementos narrativosquizz |
| quimica |
| Anatomia |
| Storia romana |
| Introduction to Biology |
| research chapter one |
| ord |
| verb |
| No |
| GS HS 1 |
| Streetcar Named Desire |
| spanska prov |
| БіологіяТема 1 |
| Biology - 1.1, 1.2 - monomers and polymers, carbohydrates |
| text |
| Integumentary system |
| Our Country's Good Context |
| Ministrar |
| oral hälsa och dentala material |
| Immunförsvaret |
| test |
| Альгология |
| supply and demand |
| NP4 |
| War Horse Production points |
| CHAPTER 3: VISUAL PERCEPTION PART 3 |
| Biologie basisstof 1 |
| Anglaisl'anglais !!!! |
| Acids & Bases (gr 10 science) |
| vävnader |
| Lengua Espanola |
| Groupe Aller |
| Groupe AllerDr. & Mrs Vandertramp |
| ekologi |
| (PHN) PUBLIC HEALTH NUTRITION PT. 2 |
| CHAPTER 3: VISUAL PERCEPTION PART 2 |
| Redovisning och finansiell analys |
| Produktkalkylering |
| Investeringskalkylering |
| Hållbarhet |
| Budgetprocessen |
| Typer av budgetar och deras samband |
| Budgeteringens roll och syften |
| Definizioni |
| Cellen |
| Entwicklung 1 |
| convection currents in the earths tectonic plates |
| buegerschap |
| (PHN) PUBLIC HEALTH NUTRITION PT. 1 |
| Patente |
| ögonswesems |
| NP 3 |
| NP2 |
| (PHN) NUTRITION EDUCATION |
| Historical and legal foundations of education |
| Parcial 1-Tema 1 |
| les mots de base en anglais |
| culture et citoyenneté du Québec |
