CSU Chem 107 Exam 1 Graded A Q&A Complete

Atom - Answer-The smallest particle of an element that retains the characteristics of the element Molecule - Answer-Forms when 2 atoms join together. Can be either an element or a compound Element - Answer-Made of only one kind of atom. Can be individual atoms or molecules of an element Compound - Answer-Made of at least 2 different kinds of elements (ex: H₂O) Pure substance - Answer-Only one type of particle that has distinct properties. Can be compounds or elements (ex: lead pipe, gold) Mixture - Answer-Two or more types of particles. Can be homogenous or heterogeneous Gas - Answer-Particles are spread out and constantly moving Liquid - Answer-Particles are close together with no regular arrangement and they slide past each other Solid - Answer-Particles have definite shape and volume Mass - Answer-The amount of matter in an object Volume - Answer-The amount of space an object takes up Density - Answer-Mass per unit volume Temperature - Answer-A measure of how hot or cold something isSigfigs in Multiplication/Division - Answer-Answers are rounded to the least number of sigfigs in any of the numbers used in the calculation Sigfigs in Addition/Subtraction - Answer-Answers are rounded to the least significant decimal place (uncertain digit furthest to the left) Mega (M) - Answer-1 x 10^6 (1,000,000) Kilo (k) - Answer-1 x 10^3 (1,000) Centi (c) - Answer-1 x 10^-2 (0.01) Milli (m) - Answer-1 x 10^-3 (0.001) Micro (μ) - Answer-1 x 10^-6 (0.000001) Nano (n) - Answer-1 x 10^-9 (0.) How do you convert Celsius to Kelvin? - Answer-K = C + 273.15 Physical property - Answer-Can be measured or observed without changing the substance's identity (boiling point, density, mass, size, time, color)