Summary Grade 10 Physical Sciences Summaries (Term 3) - Via Afrika
11 vistas 0 compra
Grado
Physical Sciences
Institución
10th Grade
Grade 10 Physical Sciences Summaries for Term 3. This summaries are composed using the Via Afrika textbooks' work with examples and supplementary notes.
Topic 1:
Chemical change.
Topic 2:
Mechanics.
Precipitation Reactions:
Ions in Aqueous Solution:
• Precipitate = solid that forms in ion-
• Ions = elements that have lost or gained electrons. exchange reaction.
• Negative ions = anions. • Solubility of ionic substances:
• Positive ions = cations.
• Ionic crystal lattice formed when ions bond
together to form a solid.
• Aqueous solution = solution in which the solvent is
water.
• Dissolution occurs when ionic solid is placed in Salt Produced by
water: Precipitation Reaction:
- Ionic compound breaks into positive and
•Sample negative ions.
- Ions are hydrated.
Water molecules are polar molecules - hydrogen
atoms are slightly positively charged, and oxygen
ions are slightly negatively charged.
U1: Reactions
in Aqueous
Solutions (A)
• Salts are made of positive and negative ions.
• Salts that will be dealt with will be made of a
metal ion or ammonium ion (NH4+) with:
- Cl-, Br-, I- (chloride, bromide or iodide ions).
- SO42- (sulphate ions).
• -
Summaries after sample
When ions interact with water, the hydrogen side - NO3 (nitrate ions).
of water molecules surrounds negative ions - causes - CO32- (carbonate ions).
attraction between hydrogen atoms and ions. Electrolytes & Conductivity:
• Positive ions are surrounded due to attraction
between the ion and oxygen - prevents ions from • Electrolyte = solution that conducts electricity.
combining and so they remain in solution. • Electricity is conducted by the movement of ions.
• Dissolution process illustrated using a balanced • Anions are attracted to positive electrode (anode).
reaction equation and state symbols (s) and (aq). • Cations are attracted to negative electrode
• Ions from one compound can switch places with an (cathode).
ion from the other compound if 2 different ionic • More dissolved ions cause greater current and
solutions are mixed - chemical reaction. higher ammeter readings.
• Only ionic solutions will conduct electricity.
• Solid ionic substances hold ions tightly in the crystal
lattice - prevent current flow.
• At positive electrode - negative ions give electrons
up and form neutral substances.
• At negative electrode - positive ions accept
electrons and form neutral substances.
Los beneficios de comprar resúmenes en Stuvia estan en línea:
Garantiza la calidad de los comentarios
Compradores de Stuvia evaluaron más de 700.000 resúmenes. Así estas seguro que compras los mejores documentos!
Compra fácil y rápido
Puedes pagar rápidamente y en una vez con iDeal, tarjeta de crédito o con tu crédito de Stuvia. Sin tener que hacerte miembro.
Enfócate en lo más importante
Tus compañeros escriben los resúmenes. Por eso tienes la seguridad que tienes un resumen actual y confiable.
Así llegas a la conclusión rapidamente!
Preguntas frecuentes
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
100% de satisfacción garantizada: ¿Cómo funciona?
Nuestra garantía de satisfacción le asegura que siempre encontrará un documento de estudio a tu medida. Tu rellenas un formulario y nuestro equipo de atención al cliente se encarga del resto.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller SummariesSA. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for 7,95 €. You're not tied to anything after your purchase.
