Purpose:
To use the physical and chemical properties of known substances to identify the components of an unknown substance. Materials:
Spot plate Magnifying glass Water (H2O) Hydrochloric acid HCL Baking soda (sodium bicarbonate) Potassium chloride (KCL) Sodium thiosulfate (NaS2O3) Sodium Nitrate (NaNO3) Chalk (CaC03) Procedure:
I decided to find the properties of the known substances by making a chart.
I put the substances on the left side and the properties on the right. Then, I dividing the chart into Physical and Chemical properties. My physical properties was divided into 4 components; State of matter, Colour, Clarity and Crystal form. The chemical properties was divided into water and HCL. Afterwards, I tested the substances one by one on the
Spot plate and recorded my observations. I would put the a little bit of the substance in the plate and examine it and recorded the physical properties. Then, I would put a little bit of the substance on another place in the plate and add water to see if it is soluble or not. I would then do the same with HCL. After I tested all the substances, I went to get the Unknown and tested its properties.
Chemistry 1: Unit 1 Review Caldwell 2013 The particulate nature of matter Review readings, powerpoints, labs, and worksheets. Unit 1 objectives Students will be able to: • apply the particulate model of matter to describing physical properties for the three states of matter and to discussing their properties (i.e. density, compressibility, etc...) The particle model for matter states that all matter is made of particles which are moving all the time. In solids they vibrate…
and Equations” lab was to observe physical and chemical properties associated with chemical reactions, to make note of/document the evidence of the chemical reaction, to practice balancing equations, to predict the products that form from a reaction, and to have an understanding; did the elements bond, break apart, or did they switch partners in the reaction (determine what happened to the reactant/s as they formed new product/s). The lab demonstrated the law of conservation of matter, in form and…
Sixth Grade Science Density and other Physical Properties TEKS (6) Matter and energy. The student knows matter has physical properties that can be used for classification. The student is expected to: (6B) Calculate density to identify an unknown substance. Supporting Standard PRIOR KNOWLEDGE MASS: the amount of matter, and is not affected by the force of gravity Use appropriate units, grams (g) and practice using triple beam balance Measure the mass of 1 mL of water (it will…
Characteristics of Matter: * What is Chemistry? (1 A) * Properties, composition and behaviour of matter (1 B) * Classification of substances – solid, liquid or gas (1 C) * Properties of solids, liquids and gases (1 D) * Kinetic Molecular Theory (1 E) * Motions of particles in solids, liquids and gases (1 F) (2) Ionic and Covalent Compounds (including Acids and Bases): * Use periodic table to be able to name ionic compounds and write their formulas (2 A) * Given…
In this lab, you will determine the density of several volumes of an unknown liquid solution called “solution X.” You must then use your data determine whether the density of the solution is an intensive or extensive. An intensive property is a physical property of matter that does not depend on the size or the amount of material in the sample. Color, for example is an intensive property; no matter how much strawberry Jell-O you have it’s always red. By contrast, an extensive property does depend…
of aluminum, 2.70 g/cm3. The independent variable was the aluminum sample shape, shots, cylinder, or cube. The constant was the material, aluminum. Safety Goggles were required. Food and beverages were not allowed in the lab. Hands were washed at the beginning and end of the lab. Materials and equipment 3 different samples of aluminum: regularly shaped block or cylinder, aluminum pellets, and an irregularly shaped piece of aluminum, 25-mL graduated cylinder, Ruler Shared: 3 electronic balances, 4…
Physical and Chemical Properties Purpose: Chemistry is the study of matter and the change it undergoes. The change is divided up into two classes, chemical change and physical change. In a physical change, one or more physical properties of a substance are altered without their being any new substances formed as a result. Some examples of physical properties include, size, shape, color, and physical phase. An example of a physical change is melting an ice cube. A chemical change results in the…
Lab Report Now You See it, Now You Don’t Hypothesis: If the temperature grows warmer, then the solvent will dissolve faster. Introduction: Nymisha: With a program known as Logger Pro, we measured the temperature of the water, the solvent, in which a mystery substance was being dissolved within, or solute. The general temperatures of the water were hot, warm, and cold. The water ranged from 3.9 degrees Celsius to 59.2 degrees Celsius. Using the thermometer as a sort of stirrer,…
oGr and http://www.youtube.com/watch?v=SV7U4yAXL5I&list=PL8dPuuaLjXtPHzzYuWy6fYEaX9mQQ8oGr -read Ch. 10, just sections 10.3 and 10.5; pp. 317-318 # 24, 30, 32 DEFINITIONS energy: that which makes matter change -sound, fire, human movement, light, electricity -everything is either matter or energy system: reaction surroundings: everything outside of the reaction calorie: amount of E to raise one gram of H2O 1 C° -food Calorie=1 kcal=1000 calories joule: 1 cal=4.18 J exothermic:…
Observations of Chemical Changes Pre lab Questions: (4pts.) 1. What are the learning goals of this lab? To be able to interpret underlying microscopic in terms of the behavior of atoms & molecules. To be able to separate mixtures into their component substances by solubility. 2. What is the meaning of chemistry? The identification of the substance of which matter is composed and the identification of their properties and the way they interact. 3. What are the common observations of chemical changes…