Exploring Properties and Changes of Matter

Mrs. Rossi introduces the properties of matter, focusing on physical and chemical properties and changes. The video explains how physical properties can be observed without altering a substance's identity, while chemical properties involve potential reactions. Examples of physical changes include boiling and freezing, whereas chemical changes involve reactions like burning. The video concludes with a practical application of these concepts through the process of baking cookies, illustrating both physical and chemical changes.

What is the amount of matter in an object called?

• Volume

• Mass

• Weight

• Density

Which of the following is a physical property?

• Ability to corrode

• Boiling point

• Ability to react

• Flammability

What happens to the chemical composition of a substance during a physical change?

• It decomposes

• It becomes a new substance

• It remains the same

• It changes completely

Which of the following is an example of a physical change?

• Burning wood

• Corroding metal

• Rusting iron

• Boiling water

What is the ability of a substance to dissolve in another substance called?

• Reactivity

• Corrosion

• Solubility

• Flammability

Which of the following is a chemical property?

• Boiling point

• Flammability

• Density

• Color

What indicates a chemical change has taken place?

• Change in shape

• Change in state

• Change in size

• Release of bubbles

Tags

NGSS.MS-PS1-2

What happens to proteins in dough at 144 degrees Fahrenheit?

• They unfold and tangle

• They evaporate

• They melt

• They freeze

Tags

NGSS.MS-PS1-4

At what temperature does caramelization start?

• 390 degrees

• 350 degrees

• 310 degrees

• 356 degrees

Tags

NGSS.MS-PS1-4

What is the Maillard reaction responsible for in baking?

• Forming Airy pockets

• Browning and flavor development

• Evaporating water

• Melting butter