The particles of matter have interstitial spaces between themKeywords (English): matter particles – intermolecular spaces – physical states – particle motion

Keywords: Chemical change – Reaction – Reactants – Products – Evidence

the goal:Explanation of how we can infer a chemical change has occurred.Materials and tools:Ammonia solution - Distilled water - Glass beaker - Universal indicator - Effervescent tablets.Steps:1- Put a quantity of distilled water in the glass.2- Add drops of ammonia solution into the water in the gl......

Keywords: Homogeneous mixtures – Heterogeneous mixtures – Solutions – Suspensions – Colloids

Three states of matterstates of matter – solid – liquid – gas – physical changes

Mixing and separation of substances mixing materials – separation – filtration – sedimentation – mixture

Keywords: Chemical reaction – Reactants – Products – Change

Keywords: Acids – Bases – Indicators – pH – Color

Purpose of experimentto learn about electrolyte solutionsToolsSodium chloride salt - dilute acetic acid - 2 beakers - distilled water - battery - electric lamp - 3 wires - glass legstepsPut 20 ml of distilled water into the first glass beaker, then add an appropriate amount of sodium chloride s......

purpose of experiment to learn about non-electrolyte solutionstools2 glass beaker  - distilled water - sugar - ethyl alcohol - battery - electric lamp - 3 connecting wires - glass rod steps Put 20 ml of distilled water into the first glass beaker, then add an appropriate amount of sugar a......

purpose of experimentAcid & base TitrationToolsHolder - Burette - Graduated cylinder (25 ml) - Hydrochloric acid - Sodium hydroxide - Glass funnel - Methyl orange.steps Fix the burette on the holder, then place the glass funnel over the burette.  Fill the burette with hydrochloric......

purpose of experiment illustrate chemical indicators tools Hydrochloric acid – sodium hydroxide – orange methyl indicator – litmus indicator – bromothymol blue indicator – 12 conical flask – distilled water-Phenolphthalein indicator StepsPut 10 ml of the solution in front of you into each conical......

Keywords: pH – Litmus paper – Solutions – Acidic – Basic

Keywords: Metals – Acids – Hydrogen – Chemical reaction

Formation of SaltKeywords (English): salt formation – ionic reaction – crystallization

Keywords: Hydrated salts – Water molecules – Heating – Chemical formula

Keywords: Rock dissolution – Acids – Reaction – Carbonates – Carbon dioxide

Keywords: Acid strength – Strong acids – Weak acids – Ionization – pH

Keywords: Metals – Acids – Hydrogen – Chemical reaction

Electrical Conductivity of AcidsKeywords (English): electrical conductivity – acids – ions – electrolyte – electric current

Keywords: Red cabbage – Color indicator – pH – Acids – Bases