1. Composition of Matter INB Page - 98

3. Matter Anything that has mass and volume Examples: A brick has mass and takes up space A desk has mass and takes up space A pencil has mass and takes up space Air has mass and takes up space

4. Pure Substances Substance: type of matter with a fixed composition that cannot be separated by physical means. Elements – Substance made up of atoms with the same identity (found on the periodic table of elements!) Compound – Atoms of two or more elements combined Examples: water (H2O) Carbon Dioxide (CO2)

5. Mixtures Mixture: Material made up of two or more substances that can be separated by physical means Heterogeneous – mixture in which different materials can be easily distinguished. Examples: Pizza, fruit salad, granite Homogeneous – mixture in which two or more substances are uniformly spread out. Examples: vinegar, salt water, coffee Salt Water Notice the uniform appearance

7. Copy and Answer the Following Reflection Question – INB What’s the difference between pure substances and mixtures?