Keywords: Nonmetals – Oxygen – Combustion – Nonmetal oxides

Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): mercury oxide – thermal decomposition – mercury – oxygen

Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): copper hydroxide – thermal decomposition – heating – oxides

Unit one: chemical reactions. Lesson one: chemical reactions.Keywords (English): copper carbonate – heating – decomposition – carbon dioxide

Unit one: chemical reactions.  Lesson one: chemical reactions.Keywords (English): copper sulfate – thermal decomposition – oxides – color change

Unit one: chemical reactions.  Lesson one: chemical reactions.Keywords (English): thermal decomposition – sodium nitrate – heat – oxides – thermal reaction

Purpose of experiment Preparation of oxygen gas in the laboratory Toolsglass beaker - two-hole cork stopper - glass spout funnel - glass delivery tube - basin - water - graduated flask - hydrogen peroxide solution (oxygen water) - manganese dioxide.StepsBring the glass basin and install th......

Purpose of experimentPreparation of carbon dioxide gas in the laboratorytoolsgraduated flask - glass beaker - cork stopper with two holes - glass funnelU-shaped glass tube - dilute hydrochloric acid - calcium carbonatesteps Place the candle in the middle of the lab bench.Light the candle by usi......

Keywords: Periodic table – Elements – Groups – Periods – Classification

Keywords: Metals – Acids – Hydrogen – Chemical reaction

Keywords: Chemical properties – Metals – Oxidation – Oxides

the goal:Learning how to prepare ester.Materials and tools: Electric heater - Glass cup - Test tube - Salicylic acid - Methanol - Sulfuric acid - Cotton - SpoonSteps:1. Fill the glass with water and heat it on the electric heater to the mid-level temperature.2. Weigh 1.5 grams of salicylic acid......

Metals and non-metalsmetals – nonmetals – conductivity – luster – hardness – matter

Keywords: Nitrogen gas – Preparation – Reaction – Products – Laboratory

Keywords: Nitrogen – Salts – Chemical reaction – Analysis

Keywords: Nitrogen gas – Preparation – Reaction – Products – Laboratory

Keywords: Ammonia gas – Ammonia – Preparation apparatus – Odors – Bases

Keywords: Metals – Acids – Hydrogen – Chemical reaction