Exploring Physical and Chemical Properties in Grade 9 Chemistry

Which of the following is a physical property?

• Reactivity with oxygen

• Boiling point

• Acidity

• Combustibility

What does malleability describe?

• The ability to be pulled into wires

• The ability to be hammered into shapes

• The resistance to being scratched

• The ability to dissolve in a solvent

What is ductility?

• The ability to flow quickly

• The ability to be pulled into wires

• The ability to dissolve in water

• The ability to resist scratching

Which of the following is a chemical property?

• Viscosity

• Density

• Color

• Flammability

How can chemical properties be observed?

• By measuring the substance directly

• By changing the state of the substance

• By observing a chemical reaction

• By looking at the substance

Tags

NGSS.MS-PS1-2

What indicates a chemical change has occurred?

• A new color appears

• The substance changes state

• The substance is cut into pieces

• The substance is mixed with another

Tags

NGSS.MS-PS1-2

Why is baking a loaf of bread considered a chemical change?

• It involves mixing ingredients

• It can be easily reversed

• It changes color and is hard to reverse

• It changes shape

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

What type of change is cutting a slice of bread?

• Neither chemical nor physical change

• Both chemical and physical change

• Physical change

• Chemical change

Why is mixing red and yellow paint to get orange considered a physical change?

• It produces heat and light

• A new substance is created

• The molecules of the paint change

• The paint particles are just mixed together

What type of change is frying an egg?

• Physical change

• Neither physical nor chemical change

• Chemical change

• Both physical and chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4