CHEM 100 Lecture Notes - Lecture 1: Bismuth, Abuna, Astatine

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chocolatesardine697

24 Oct 2017

School

UWM

Department

Chemistry and Biochemistry

Course

CHEM 100

Professor

Dr.Carlson

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Document Summary

A homogeneous mixture, or solution, has uniform composition throughout (and a single phase). Solid phase (s) has xed shape and volume. Liquid phase (l) has inde nite shape, but xed volume. Gas phase (g) has neither xed shape nor xed volume: a change in a substance may be classi ed as either a physical or chemical change: In a physical change, the identity of the substance(s) remain unchanged. A physical property is a characteristic that can be observed or measured without changing the composition of the substance. In a chemical change, or chemical reaction, new substances are formed: energy is the capacity to do work or transfer heat, physical and chemical changes involve energy. The energy of an object is the sum of its kinetic and potential energy. Energy can change form and be transferred as heat. 2: the scienti c method is a system of inquiry used by scientists:

Related Questions

1) Classify each of the following as a mixture, a compound, or an element?

table sugar, propane, bronze, tea, vinegar, dry ice, oxygen, aluminum

2) Select the statements that pertain to elements. Select all the statements that apply.
a) These can be broken down by physical means.
b) These cannot be broken down by chemical means.
c) These combine chemically to form new substances; they are building blocks of matter.
d) These are chemical combinations of simpler forms of matter.
e) These are pure substances.

3) Which of the following are chemical changes? Check all that apply.
a) sugar is dissolved in water
b) a warm coke bottle fizzes when opened
c) the copper roof turns green over time
d) baking soda is dissolved in vinegar and bubbles appear
e) a fog appears on your windshield in cold weather

4) Classify each property as physical or chemical.

a)susceptibility to rust

b) flammability

c) boiling point

d) melting point

e) conductivity

f) color

5) Which of these substances are elements? Check all that apply.

a) silicon

b) iodine

c) lead

d) quartz

e) silicone

f) water

please I need help with questions

Which of the following are true? [check all that apply] Ternary salts are compounds that result from replacing the hydrogen in a ternary acid with metal ion or ammonium ion. Ternary compound consists of two elements. Most transition metals and the metals of group 3A (except Al), 4A, and 5A exhibit more than one oxidation state, thus, they may form two or more binary compounds with the same nonmetals. Ternary acids are compounds of hydrogen, oxygen and (usually) a metal. Nearly all binary molecular compounds involve two nonmetals bonded together. Prefix tetra- represents the number five. Binary compound consists of two elements. To name binary compound, the less electronegative element is named first and the more electronegative element is named second. Binary acids arc compounds in which H is bonded to a group 6A element other than that O or to a group 7A element. To name binary ionic compounds which contains metal cations and nonmetal anions, the anion Is named first and cation

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CHEM 100 Lecture Notes - Lecture 1: Bismuth, Abuna, Astatine

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