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Mixtures and Their Importance in Daily Life

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Mixtures and Their Importance in Daily Life

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Questions and Answers

What are the properties of brass compared to German silver and bronze?

Brass is a mixture of copper and tin, German silver is a mixture of copper and zinc, bronze is a mixture of copper, zinc, and nickel

Brass is a mixture of copper and zinc, German silver is a mixture of copper, zinc, and nickel, bronze is a mixture of copper and tin (correct)

Brass is only made of zinc, German silver is a mixture of copper and nickel, bronze is a mixture of copper and tin

Brass contains copper and nickel, German silver contains copper and zinc, bronze contains copper and tin

What concentration of fluoride ions in water prevents tooth decay?

1 ppm (correct)

1.5 ppm

2 ppm

3 ppm

What happens if there are high concentrations of fluoride ions in water?

It causes tooth decay

It improves tooth enamel

It causes the tooth to become mottled (correct)

It enhances dental health

Why are intravenous injections dissolved in water containing salts at particular ionic concentrations?

To match with blood plasma concentrations Signup and view all the answers

Which component in a homogeneous mixture is typically referred to as the solvent?

The component with the highest quantity Signup and view all the answers

What is the role of fluoride ions in preventing tooth decay?

Enhancing tooth enamel Signup and view all the answers

Why are intravenous injections dissolved in water containing salts at specific ionic concentrations?

To match blood plasma concentrations Signup and view all the answers

What distinguishes the properties of brass from that of German silver?

Nickel content Signup and view all the answers

How do high concentrations of fluoride ions in water affect the tooth?

Cause mottling of the tooth Signup and view all the answers

What is the component that is present in the largest quantity in a homogeneous mixture?

Solvent Signup and view all the answers