Download presentation
Presentation is loading. Please wait.
Published byFlorence Harrington Modified over 8 years ago
1
UNIT 02 MATTER
2
A. CLASSIFYING MATTER Matter is anything that has a mass and volume. Mass is the amount of matter the object contains. Examples of things that are not matter: Light, energy and heat Which has more matter? The golf ball or the ping pong ball?
3
Matter can be divided into pure and impure particle arrangement- A substance is anything that contains only one type of matter. A mixture is physical blend of two or more substances that are not chemically combined. A. Classifying Matter
5
Element The simplest forms of matter. Composed of identical atoms Located on the periodic table ex: copper wire, aluminum foil A. Classifying Matter
6
Compound composed of 2 or more elements in a fixed ratio properties differ from those of individual elements EX: table salt (NaCl), water (H 2 O ) A. Classifying Matter
8
A mixture is a combination of two or more substances in which the substances retain their distinct identities. 1. Homogenous mixture – composition of the mixture is the same throughout. Cannot be separated by physical means (Also called a SOLUTION) 2. Heterogeneous mixture – composition is not uniform throughout. Can be separated by physical means A. Classifying Matter
9
B. MATTER FLOWCHART MATTER Can it be physically separated? Homogeneous Mixture (Solution) Heterogeneous Mixture Compound Element MIXTUREPURE SUBSTANCE yes no Can it be chemically decomposed? no yes Is the composition uniform? noyes
10
Determine if each drawing represents a mixture, a compound, or an element. Classifying Matter
11
ANSWERS TO THE CLASSIFYING MATTER ACTIVITY Water & Food Coloring – Rock Salt (NaCl)- Beans- Acetic Acid (CH 3 COOH)- Sulfur (S)- Soap- Oil & Water- Tin (Sn) – Oil & Food Coloring – Sugar (C 6 H 12 O 6 ) – Brass (Alloy of Cu & Zn)- Salt Water- Element Compound Heterogeneous mixture Homogeneous mixture Compound Homogeneous mixture Heterogeneous mixture Element Heterogeneous mixture Homogeneous mixture Heterogeneous mixture
12
B. STATES OF MATTER There are four states of matter 1. Solids – Very low KE – only vibrate in place – atoms are packed together in fixed, orderlypositions – strong intermolecular forces between atoms – Definite shape – Definite volume
13
2. Liquids Low KE - particles can move around but are still close together Weak intermolecular forces Indefinite shape – takes the shape of the container Definite volume B. States of Matter
14
3. Gases High KE - particles are far apart and move quickly No intermolecular forces Indefinite shape Indefinite volume B. States of Matter
15
4. Plasma high temperature state in which atoms lose their electrons Ex. the sun B. States of Matter
16
CHANGES OF STATE Melting – solid to liquid Freezing - liquid to solid Vaporization – liquid to gas Condensation – gas to liquid Sublimation – solid to gas or gas to solid
17
STATES OF MATTER Name: _______________________ Period: _________ SolidLiquidGas Shape Volume Attractive Forces Expansion Compressibility Atom Movement In each box draw the molecules of that state of matter. For each arrow, label the change of state that occurs. (Note: there are 6 arrows total!)
18
CHANGES OF STATE The same substance can transform into each state of matter by increasing or decreasing in energy. Sublimation Deposition Melting Vaporization Freezing Condensation
19
MATTER AND CHANGE Property SolidLiquidGas ShapeDefiniteIndefinite VolumeDefinite Indefinite Attractive ForcesStrongWeakNone ExpansionVery slightModerateGreat CompressibilityAlmost none Readily Atom MovementVibrationFlowingFree
Similar presentations
© 2024 SlidePlayer.com Inc.
All rights reserved.