Five Grams Of Table Salt To 100ml Of Water

Every individual is different in a specific way. Like people, substances have unique qualities, such as properties, which aid chemists to differentiate and identify the particular components the substances consists of. These particular qualities are identified as either physical or chemical properties. Physical properties are properties which do not require a chemical change of its composition in order for the substance to be classified. A few examples of physical properties include color, density, odor, boiling point, melting

What is the appearance of reactant, Evidence of chemical reaction, and properties of a product?

A physical change includes a change in the material without affecting its composition, such as the physical state change. However, a chemical change includes the change in the composition of the substance. The change in color, formation of a gas or a solid product, and the production of energy are the evidences of a chemical reaction, thus, of a chemical change.

These reactions can be seen from just a little bit of reaction all the way up to a complete change of the entire sample tested. Some samples of those tested in this experiment which showed the chemical reaction were the baking soda/ammonia mixture, the Epson salt and baking soda mixture as well as the food coloring mixed with the baking soda and bleach. 2. Which reactions, if any, do you believe showed no evidence of chemical change? Justify your reasoning.

The Vitamin C turned to a red/orange color with no physical/chemical reaction. For the salt the solution turned to an orange color with no physical/chemical reaction. With the Alka-Seltzer, the solution turned to a brown color with no reaction as well. Last but not least, the Baking soda turned to an orange/brown color with no reaction.

The purpose of this lab is to test substances and to determine the physical and chemical properties of substances.

17) Pour a small amount of the hot solvent into the flask containing the solid.

Before boiling commenced two layers formed in the reaction flask. The bottom layer was slightly cloudier than the clear top layer.

A physical change is one that affects only the physical properties of a substance, while a chemical change alters a substance at the molecular level.

In this experiment you will observe some physical and some chemical changes. You will observe that energy must be used to start some chemical reactions, and that it is produced in others.

Objective : To demonstrate the differences between physical and chemical changes while observing the laws of conservation of matter and energy.

Heavy precipitate emerged immediately and solution turned white in color; solution then became opaque and turned light, bright blue in color.

Hypothesis: If we use these materials and use magnets, water, burners, and filters on the mixtures and elements given we should determine what kind of effect these materials given will have on these mixtures and elements, physical or chemical.

Penny A stayed the same, while penny B had a chemical change. The penny started to turn green by the vinegar that was put on it. The vinegar is a chemical and caused the penny to change chemically. Even though the penny still looks like a penny, the reaction from the experiment clearly showed that the change was a chemical change (a substance that is turned into something new). A reason that the penny that was in vinegar changed so much, compared to the penny that was in water is because of oxidation. Oxidation is when metal reacts with oxygen in the air to produce metal oxides. When exposed to air, the metal loses electrons and changes different colors. Due to this, the metal has lost electrons to oxygen, which means the metal has been oxidized. This is how the penny turned a different color. The penny was combined chemically (the vinegar) with oxygen, which made it become oxidized. Penny A stayed the same because the penny was not being affected by anything that was a chemical or an acid, like vinegar. Thus, the penny that was in water was not oxidized and did not turn a green color. Therefore, the reason that Penny B was affected differently than penny A, was becasue penny B was affected by oxidation and was chemically changed, while penny A was

A few more important terms to keep in mind when doing a lab with chemical and physical changes are