Видео 55
Просмотров 187 286

0:29

Scientific Notation on a Calculator

5:53

Unit Conversion

11:46

Lead(II) Nitrate and Potassium Iodide

0:21

Binary Ionic Compounds Criss-Cross Rule

2:14

bohr diagrams

6:20

boat on river

This video walks through an example of boat-on-a-river questions that illustrate aspects of addition and subtraction of perpendicular vectors.
The web site used in the video is found at profferings.ca/iwb/vectors/index.html

Видео

0:29

Indirectly Measuring Friction

Просмотров 3023 года назад

This is a demonstration of a method of indirectly measuring the friction force between the bottom of a box and the table surface, and for comparing static friction and kinetic friction. A box is being pulled across a table top using a force sensor connected to a computer, which measures the pulling force. The horizontal pulling force is gradually increased until the box begins to move, at which...

5:53

Scientific Notation on a Calculator

Просмотров 1773 года назад

This video demonstrates the proper way to work with scientific notation on a calculator and briefly explains why that matters.

11:46

Unit Conversion

Просмотров 683 года назад

How to do unit conversion, with two examples, one simple, one complex.

0:21

Lead(II) Nitrate and Potassium Iodide

Просмотров 2,8 тыс.3 года назад

The precipitation reaction between lead(II) nitrate and potassium iodide, demonstrated without commentary. It is intended for use within a larger context.

2:14

Binary Ionic Compounds Criss-Cross Rule

Просмотров 843 года назад

This video steps through 3 examples of determining the formulas for binary ionic compounds from the name - monovalent elements only.

6:20

bohr diagrams

Просмотров 383 года назад

Three examples of drawing electron shell diagrams, aimed at a beginning chemistry course.

1:11

Reaction Rates from Graphs

Просмотров 1233 года назад

This is intended for a virtual lab exercise. The video shows the reaction between Zn and HCl, which produces hydrogen gas. The escaping gas causes the mass of the remaining materials to go down over time. By pausing the video frequently and collecting mass and time data, a graph can be drawn from which reaction rates can be determined. The reaction lasts for about 20 minutes. Most of the video ...

Factors affecting reaction rate: Concentration of the reactants

0:30

Factors affecting reaction rate: Concentration of the reactants

Просмотров 7183 года назад

A brief demonstration showing 1M HCl and 6M HCl reacting with zinc.. This is one of 5 videos demonstrating factors affecting reaction rate. The others demonstrate: - the nature of the reactants - catalysts - surface area - temperature

Factors affecting reaction rate: Nature of the substance

0:35

Factors affecting reaction rate: Nature of the substance

Просмотров 1,6 тыс.3 года назад

A brief demonstration of how the substances involved affect the rate of a reaction. A similar reaction is conducted using three different metals, which react at different rates. The reaction is between the metal and hydrochloric acid. This is one of 5 videos demonstrating factors affecting reaction rate. The others demonstrate: - catalysts - concentration of the reactants - surface area - tempe...

Factors affecting reaction rate: Surface area

0:32

Factors affecting reaction rate: Surface area

Просмотров 1763 года назад

A brief demonstration of how surface area affects the rate of the reaction between magnesium and hydrochloric acid. This is one of 5 videos demonstrating factors affecting reaction rate. The others demonstrate: - the nature of the reactants - concentration of the reactants - catalysts - temperature

Factors affecting reaction rate: Temperature

1:32

Factors affecting reaction rate: Temperature

Просмотров 1043 года назад

A brief demonstration of how temperature affects the rate of the reaction between sodium thiosulfate and hydrochloric acid. This is one of 5 videos demonstrating factors affecting reaction rate. The others demonstrate: - the nature of the reactants - concentration of the reactants - surface area - catalysts

Factors affecting Reaction Rate: Catalysts

0:51

Factors affecting Reaction Rate: Catalysts

Просмотров 1,6 тыс.3 года назад

A brief demonstration of how the addition of a copper catalyst speeds up the reaction between zinc and hydrochloric acid. This is one of 5 videos demonstrating factors affecting reaction rate. The others demonstrate: - the nature of the reactants - concentration of the reactants - surface area - temperature

1:23

Identifying Unknown Solutions Set 4

Просмотров 424 года назад

This is Set 4 of three similar videos, labelled Set 2, Set 3 and Set 4 (There is no set 1). The point of the exercise is, given 4 solutions of ionic compounds, to identify which is which based on ion colours and solubility rules. The video only shows the observations, without explanation. It is intended either for review after students have completed the lab in class, or as a virtual lab experi...

1:17

Identifying Unknown Solutions Set 3

Просмотров 204 года назад

This is Set 3 of three similar videos, labelled Set 2, Set 3 and Set 4 (There is no set 1). The point of the exercise is, given 4 solutions of ionic compounds, to identify which is which based on ion colours and solubility rules. The video only shows the observations, without explanation. It is intended either for review after students have completed the lab in class, or as a virtual lab experi...