TroChapter1Notes - Tros Chemistry Chapter 1 Matter,...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Tro’s Chemistry Chapter 1 – Matter, Measurement, and Problem Solving Page 1 of 12 Acknowledgements: Some of the images are adopted from Tro’s textbook, the only purpose of which is to enhance student learning. Key terms: Matter, element, compound, pure substance, mixture, homogeneous, heterogeneous, filtration, distillation, metric system, SI units, base quantity, derived quantity, significant figure, rounding rules, exact number, conversion factor, chemical property, physical property, density, solubility, melting point, boiling point. Review questions: 5, 6, 8, 9, 11 – 32. Suggested problems: 39, 43, 51, 53, 55, 65, 69, 73, 75, 79, 81, 87, 91, 93, 97, 99, 111. What is chemistry? It is the science of the fundamental structure of matter , the composition of substances, their transformations, analyses, syntheses, and manufacture. What is matter? Something that has mass and occupies space 1.1 Atoms and Molecules Atoms are the submicroscopic particles that constitute the fundamental building blocks or ordinary matter. Molecules contain two or more atoms joined in specific composition and specific geometrical arrangement. 1.2 The Scientific Approach to Knowledge 1.3 Classifications of matter: by the physical states. Solid Strong intermolecular forces Definite shape and volume Can be crystalline or amorphous Liquid Weak intermolecular forces Indefinite shape but definite volume Gas Negligible intermolecular forces No definite volume or shape
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Tro’s Chemistry Chapter 1 – Matter, Measurement, and Problem Solving Page 2 of 12 Classifications of matter: by the composition. Matter Yes One type No Pure substances Mixtures Elements Homogeneous Compounds Heterogeneous Pure substances e.g., element or compound a) Element can not be decomposed into simpler substances. Many are atomic (Al), some are molecular (O 2 ). b) Compounds are composed of two or more elements in a fixed ratio (H 2 O). Mixtures e.g., homogeneous or heterogeneous a) Homogeneous mixtures are uniform, also called solutions (vinegar). b) Heterogeneous mixtures are not uniform in a given sample (concrete). Separating mixtures - techniques Decantation Filtration Evaporation Condensation Distillation Chromatography Mass spectrometry Q39. Complete the following table. Substance Pure or mixture Type (element or compound) Aluminum Apple juice Hydrogen peroxide Chicken soup
Background image of page 2
Tro’s Chemistry Chapter 1 – Matter, Measurement, and Problem Solving Page 3 of 12 1.4 Physical/Chemical Changes/Properties of matter Physical changes Chemical changes Physical properties – describe physical attributes e.g., appearance, color, density, hardness, solubility, boiling point, melting point, etc. The identity of matter does not change. A physical change relates to change in physical properties.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 12

TroChapter1Notes - Tros Chemistry Chapter 1 Matter,...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online