Question | Answer |
What is an ELEMENT? | A substance that cannot be broken down into smaller substances. It has a fixed composition because it contains only ONE type of atom. |
Give an example of a pure substance. | Salt, sugar, gold, silver, chlorine etc. |
Kindly define PURE SUBSTANCE | Matter that always has EXACTLY the same composition |
What is a compound, give an example, please | A substance made from two or more simpler substances and can be broken down into those simpler substances. It always contains two or more substances combined in a fixed proportion EXAMPLE: water! |
What is a mixture? Example please! | Tend to retain some of the properties of their individual substances. The properties of a mixture can vary because the composition of a mixture is not fixed. It CAN be broken down into smaller parts. EXAMPLE! Salsa, trail mix |
Heterogeneous Mixture definition | A mixture where the parts are noticeably different from one another. Example: Sand |
Homogenous Mixture definition and example | A mixture where the substances are so evenly distributed that it's hard to distinguish one bit of it from another |
How can a mixture be classified? | It is classified by the by the size of it's largest particles, and is put into one of three groups: solution, suspension, colloid |
What is a solution? name one | A solution is when substances dissolve and form a homogenous mixture EXAMPLE: salt water |
What is a suspension? example, please | A suspension is a heterogeneous mixture that separates into layers over time. EXAMPLE: Balsamic vinagarette dressing |
Please explain a colloid! give an example | A mixture that contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension EXAMPLE:homogenized milk |