# Tag Archives: education

Gradient: Gradient is the measure of a line’s steepness (slope). The gradient of a line describes the change in y values as the x value increases by 1. The size of the gradient tells us how steep a line is. … Continue reading

## Coordinate Geometry

On a Cartesian plane, the horizontal axis is called the x axis and the vertical axis is called the y axis. The point of intersection of the x and y axes is called the origin. The coordinates of the origin … Continue reading

## Linear Equations

There is a Linear relationship between two variables if a uniform change in the independent variable produces a uniform change in the dependent variable. A linear relationship produces a linear graph (straight line). A linear graph is represented by the … Continue reading

## Burning

1. Is burning a chemical reaction? 2. What happens when substances burn? 3. What are oxidation reactions? 4. Is rusting an oxidation reaction? Why? 5. Rusting is a very slow type of burning reaction. True or false. 6. What are … Continue reading

## Rusting

1. Define corrosion. Give three examples. 2. What is the most common kind of corrosion that we see around us? 3. _______ is the product of the corrosion of iron. 4. Describe the chemical reaction that takes place during rusting. … Continue reading