Quick definition of chemistry: the study of the interactions of matter with other matter and other energy.
Chemistry is everywhere!
Matter is anything that has mass and takes up space.
Examples of matter: a tree, an apple, a human
Examples that are not matter: love, a thought, a memory
Physical properties are characteristics that describe matter as it exists.
Physical change occurs when matter changes one or more physical properties. Examples include a change in color, temperature, size or weight.
Chemical properties are characteristics that describe how matter changes in the presence of other matter.
Chemical change occurs when there’s a change in the matter’s chemical composition.
Substance: a particular kind of matter with uniform properties.
Mixtures: are physical combinations of more than one substance.
Heterogeneous mixture: A mixture of two or more substances that don’t completely mix to form one unified solution.
Homogeneous mixture: two or more substances that completely mix with one another to act as one solution.
