1) Choose the meaning of "observe" in the following sentence. He drew a conclusion from the observation of plant growth. a) It means to notice what's going on through your eyes. b) It means to notice what's going on through your senses, or the act of knowing and recording something. 2) Choose the meaning of "substance" in the following sentence. Another important job for food scientists is to measure what food "substances" are in foods. a) Matter that is made up of one type of atom or molecule b) Matter that is made of up of two or more atoms and molecules 3) Choose the meaning of "mixture" in the following sentence. Ingredients can be made of one type of molecule or mixture of different types of molecules. a) A combination of two or more substances b) A combination of one substance 4) Choose the meaning of "property" in sentence following sentence. A physical property of a peach is its color, but also the fuzzy texture that we all feel when we hold it. a) Physical properties are what you see, and know such as the tiger is fierce b) Physical properties are what you can see or feel, like the color or texture of an object.

Unit 2 Modeling Matter

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