Propose other examples in which changing the proportions in a mixture changes the properties.

Concrete Mix: The proportions of cement, sand, aggregate, and water in a concrete mix can significantly affect its properties. For example, increasing the amount of cement can make the concrete stronger but also more brittle. On the other hand, increasing the amount of water can make the concrete easier to mix and pour, but it can also weaken the final product.

Baking a Cake: The proportions of ingredients like flour, sugar, eggs, and butter can greatly affect the texture and taste of a cake. For instance, using more eggs can make the cake richer and denser, while using more sugar can make it sweeter and more moist.

Paint: The proportions of pigment, binder, and solvent in paint can change its color, consistency, drying time, and durability. For example, adding more pigment can make the color more vibrant, but it can also make the paint thicker and harder to apply.

Alloys: The proportions of different metals in an alloy can change its properties like strength, ductility, corrosion resistance, etc. For example, adding more carbon to iron creates steel, which is much stronger than pure iron.

Cosmetics: The proportions of various ingredients in a cosmetic product can affect its texture, color, longevity, etc. For example, more oil in a lipstick formula can make it more moisturizing, but it may also make it less long-lasting.