University:
Felician University
Course:
CHEM-001 | Basic Chemistry
Academic year:

2022
Views:

220

Pages:

3
Author:

StellarStrategist

ANSWERКEY SCIENCE NO'{ES, Foundations of Chemistry - Physical Properties Guided Questions Tide/SubTide Physical Properties What is а physical property? А physical property is а characteristic of matter that you can observe or measшe without changing the identity of the matter There are many Physical Properties of Matter. Go to pages 392-393 and list the 8 physical properties shown in ТаЪlе 1. 5 State of Matter 1. Mass 6 Density 2. Conductivity 7 Solubllity 3. Volume ting 8 Magnetism Points 4. Boiling/Mel States of Matter What are the 3 states of matter? 1. Solids 2. Liquids 3. Gases What m.ak:es some matter а solid and others а liquid or gas? How close the particles in matter are to one another and how fast they move, determines whether matter will Ье а solid, liquid or gas Label each of the 3 states of matter below: __liquid___ __solid _gas__ ... Differentiate sta�s of matter. Amlngement of Partldes State tvaлd Solid k Liquid Gas Мotlon of Particles qш� Size Dependent Properties What is mass? Mass is the amount ofmatter in an object Why is mass а size dependent property? Mass is а size-dependent property ofа substance because its value depends on the size ofthe sample What is weight? Weight is the pull ofgravity on matter. Why would а dumbbell have the same mass on the Moon but а different weight? Weight changes with location, but mass does not. What is the unit of measurement used for volume? А unit ofmeasurement often used to measure volume is the mL (millimeter) What is volume? Volume is the amount ofspace an object takes up Size Independen t Properties What does size-independent properties mean? Size dependent means the measurement depends on how much matter is in а sample What are some examples of size-independent properties: 1. Melting Point 4 Conductivity 2. Boiling Point 5 Solubllity 3. Density What is melting point? The temperature at wblch а substanc.e changes from а solid to а liquid is its melting point What is boiling point? What is the boiling point of water in Celsius at sea level? The temperature at wblch а substance changes from а liquid to а gas is its boiling point. The boiling point ofwater at sea level is 100 °С. What is density? Density is the mass per unit volume ofа substance. Look at the "Math Skills Вох" on page 391. Write the equation for density below: Denisty = mass/volume What is electtical conductivity? Electrical Conductivity is the ability ofmatter to conduct, or carry, an electric current. What is thermal conductivity? Thermal conductivity is the ability ofа material to conduct thermal energy. What is solubility? Solubllity is the ability ofone substance to dissolve in another. Separating Mixtures How is а mixture different from а compound? One way а mixture is different than а compound is that the parts ofа mixture can often Ье separated. How can we separate the salt from water in а salt water mixture? One way to separate salt from а salt water mixturec«-ю boil away the water Why can't physical properti.es Ье used to separate а compound into the elements it contains? Physical properties can't Ье used to separate а compound into the elements it contains because the elements are chemically bonded together. ..,.ldentlfy and ducriЬ. tl1ree physical properties tlщt с011 Ье used to separate mixtures. How it can Ь. uиcl to иparate а mlxture PropertJ