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 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