7.5 Explaining properties of matter

What type of properties do substances have?

• Only chemical properties

• Only physical properties

• Both chemical and physical properties

• None of the above

What does the word "property" mean?

• characteristics that can be used to describe an object or substance

• a house

• something to do with the colour of chemicals

• whether something is an acid or an alkali

Which of the following is a chemical property?

• Colour

• Mass

• pH

• Density

What can Universal Indicator and litmus be used for?

• Measuring temperature

• Identifying types of metals

• Distinguishing between acidic, alkaline, and neutral solutions

• Calculating density

Alloys have:

• The same properties as the substances they're made of

• Different properties to the substances they're made of

• No properties

• Only chemical properties

Which substance is commonly used to measure acidity or alkalinity?

• red litmus paper

• universal indicator

• blue litmus paper

• all of the above

How does the particle model explain the difference in hardness between pure metals and their alloys?

• Pure metals have more particles

• Alloys have a different arrangement of particles

• Pure metals have a higher pH

• Alloys have a lower density

What is the pH of a neutral solution?

• 3
• 10
• 5
• 7

What color does Universal Indicator turn in an acidic solution?

• Red

• Green

• Blue

• Yellow

Red itmus paper turns _______ in an alkaline solution.

• Red

• Green

• Blue

• Yellow