CHEM notes 8_28

CHEM notes 8_28 - CHAPTER 1 Molecule- two or more compounds...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CHAPTER 1 Molecule- two or more compounds bonded together Compound- more than one type of atom Mixture- combo of chemicals See figure 1.5 Compounds will have a set ratio Physical properties: Characteristic of identity - ex. Color, melting point, density Chemical property: Characteristic of way substance reacts- ex.: flammable, oxidize Table 1.5- selected prefixes used in the metric system Mass- kg or g Length- m Time- sec- s Temperature- Kelvin- K Amt. of substance- mole- mol Volume- (length) cubed, meters cubed 1 mL = 1 cubic centimeter= cc Liter= decimeter cubed Density= mass/ volume g/mL (solids & liquids) or g/L (gases) Uncertainty in Numbers: 5 g 5.0 g 5.00 g 5.0000 g Uncertainty is in last digit ^ Significant figures: Numbers that are used in determining the accuracy. 27 -> two sig. digits If you have a zero between two non zero numbers, these are sig. 507- 3 sig, fig
Background image of page 1

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

View Full DocumentRight Arrow Icon
Zero at beginning of no. not sig fg 0.0030 - 2 sig. fig. Zero at end of no. and also behind decimal point is significant
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

CHEM notes 8_28 - CHAPTER 1 Molecule- two or more compounds...

This preview shows document pages 1 - 3. Sign up to view the full document.

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