Define element. - An element is a pure substance that cannot be broken down into simpler substances., Define compound. - A compound is a pure substance that is made of two or more elements chemically combined., Define mixture. - A mixture is made of two or more elements and/or compounds not chemically combined., Define solubility. - Solubility is the maximum amount of solute that can dissolve in a given volume of solvent., What are the components of a solution? - A solute dissolved in a solvent., What are the components of a suspension? - An insoluble solid in a liquid., How can I tell if a mixture is a solution or suspension?, What are the differences between a compound and a mixture? - Refer to the criteria for comparison., How many elements are there in the compound NH4NO3? - 3 (N, H, O - count the number of unique chemical symbols), What are the three types of mixtures? Give an example of each of the three types of mixtures. - Mixture of elements (e.g., alloys like bronze made of copper and tin), mixture of elements and compounds (e.g, air contains oxygen and carbon dioxide), and mixture of compounds (e.g., saltwater made of salt and water), What are some common properties of metals? Where are metals found in the periodic table? - Metals are shiny, good thermal conductors, good conductors of electricity, malleable and ductile. They are found on the left of the staircase in the periodic table., What are some common properties of non-metals? Where are non-metals found in the periodic table? - Non-metals are dull, poor thermal conductors, poor conductors of electricity, not malleable and not ductile (often brittle). They are found on the right of the staircase in the periodic table., Why is NO2 a compound? - The chemical formula shows that two elements, nitrogen and oxygen, are chemically combined in a fixed proportion by mass., What is a solute? - A solute is a solid that dissolves in a solvent., What is a solvent? - A solvent is the liquid that dissolves other substances., How do I increase the rate of dissolving? - Increase the temperature of the solvent, increase the rate of stirring, decrease the size of the solute particles., Does increasing the volume of water increase the solubility of salt? - No, as the maximum mass of salt that can dissolve in a fixed volume of water (e.g., per 100 cm3) will not change.,

Elements, compounds, mixtures - Flash cards

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