Chemical Reaction Lab Report

- Results: When a lighted match was held 2cm away from the unlighted candle in its smoke, the flame would jump from the match to the wick having been carried by the smoke.

When calcium chloride, sodium bicarbonate, and phenol red are put into a bag and mixed up the type of reaction that occurs is a chemical reaction for the following reasons. Things that indicate that a chemical reaction has occurred are color change, formation of precipitate, formation of gas, and energy transfer in which three of them took place in the reaction of calcium chloride, sodium bicarbonate, and phenol red. The three indicators in this experiment were: a color change, formation of gas, and an energy transfer

The mole is a convenient unit for analyzing chemical reactions. Avogadro’s number is equal to the mole. The mass of a mole of any compound or element is the mass in grams that corresponds to the molecular formula, also known as the atomic mass. In this experiment, you will observe the reaction of iron nails with a solution of copper (II) chloride and determine the number of moles involved in the reaction. You will determine the number of moles of copper produced in the reaction of iron and copper (II) chloride, determine the number of moles of iron used up in the reaction of iron and copper (II) chloride, determine the ratio of moles of iron to moles of copper, and determine the number of atoms and formula units involved in

A chemical reaction is when substances (reactants) change into other substances (products). The five general types of chemical reactions are synthesis (also known as direct combination), decomposition, single replacement (also known as single displacement), double replacement (also known as double displacement), and combustion. In this lab, the five general types of chemical reactions were conducted and observations were taken before, during, and after the reaction. Then the reactants and observations were used to determine the products to form a balanced chemical equation. The purpose of this lab was to learn and answer the question: How can observations be used to determine the identity of substances produced in a chemical reaction?

A chemical reaction is a process that involves change of the molecular or ionic structure of a substance, as opposed to a change in physical form or a nuclear reaction. The key concepts of a chemical reaction are:

Add a magnet to the bottom of the paper and observe what happens. In experiment 2 fill a small beaker until it is half-empty with cold water. Obtain the test tube in the warm water and pour it into the cold water. In experiment 3 place a piece of magnesium in a test tube and add 10 drops of hydrochloric acid. Feel the bottom of the tube. In experiment 4 scoop a small amount of sodium bicarbonate to a test tube. Add 10 drops of 6M HCI. Feel the bottom of the tube. In experiment 5 combine 5 drops of barium chloride and 5 drops of sodium sulfate. In experiment 6 mix some sodium chloride in a test tube with 2 mL of

Purpose: The purpose of this lab is to observe the chemical changes of multiple single replacement reaction. Materials: Chemicals Laboratory Tools Zinc Chemplate Magnesium Goggles Copper Toothpicks CuSO4 (Copper (II) Sulfate) AgNO3 (Silver Nitrate)

During the preparation of the, “Turning Pennies Green”, lab, students were asked to perform an experiment at home. The lab demonstrates what the effects of chemical and physical changes are. Students were asked go home, put two pennies in separate bowls, and label one bowl cup A, water and cup B, vinegar. Then, they were asked to place paper towels in the bowl. For cup A, water was to be poured in, but just enough to wet the paper towel inside, so the penny was not submerged.

At station A when zinc and hydrochloric acid react with each other it is a chemical change because it creates gas bubbles and temperature change. At station B where NaOH solution and phenolphthalein react with each other it is a chemical change because it changed to the colour purple and the change looked difficult to reverse. Station C in which sulfuric acid and magnesium were to react with each other is a chemical change because it formed gas bubbles and changed colour. Station D where hydrochloric acid and Bromothymol blue were the materials is a chemical change because it changed to the colour yellow and looked difficult to reverse. In Station E where NaCl solution and AgNO3 solution were the materials is a chemical change because the reaction

This is done through a change in temperature. Over time, two objects that are in direct contact will

The purpose of the lab is to study the effect of a chemical reaction, on the change in mass.

Purpose: The purpose of this experiment was to observe the many physical and chemical properties of copper as it undergoes a series of chemical reactions. Throughout this process, one would also need to acknowledge that even though the law of conservation of matter/mass suggests that one should expect to recover the same amount of copper as one started with, inevitable sources of error alter the results and produce different outcomes. The possible sources of error that led to a gain or loss in copper are demonstrated in the calculation of percent yield (percent yield= (actual yield/theoretical yield) x 100.

In the chemical and physical change lab, we figured out what a chemical change is. A chemical change is a change in which one or more substances are converted into a different substances. That means if a chemical change occurred the substances will be turned into a different substance. In order to know if a chemical change happened you will see bubbles, a color change, energy released as heat and light or a solid participate. The first example, of a chemical change in this lab is bubbles. In stations 6 and 8 each had bubbles in them. In station 6 the zinc was put into the HCI acid and once they touched they got bubbly and cloudy. Also in station 8 when a spoonful of baking soda and HCI acid touches the solution, it started to bubble and fizz.

Dispense .5 mL water into the already weighed conical vial, replace cap and face insert on its down side.

A chemical reaction is when two or more (different) substances, react with each other to form new chemical substances(product). In a chemical reaction, the molecular structure is rearranged.When the molecular structure is rearranged it can increased or decreased. The signs of a chemical reaction include a colour change, temperature change, formation into a gas and odour change. The rate of reaction can be increased by increasing the temperature, concentration and the expansion of the surface area which is explained by collision theory collision theory. Collision theory is when the kinetic energy increases the chance that the atoms and molecules collide. Kinetic energy is an energy which a body possesses by virtue of being in motion. By increasing the temperature the particles start to move around quicker because they have more energy. This means that it is more likely to collide with the other substance making it easier than to collide with each other, making the reaction rate higher. Changing the concentration of the solution the particles become more crowded, therefore there is a greater chance of the particles colliding, increasing the rate of the reaction. Lastly, by expanding the surface area the particles are more exposed to the reactant, there's will be more constant so the rate of reaction increases.