The video explores how to identify substances using their properties. It begins with a candy analogy, explaining how properties like size and shape can help identify a gummy frog. The video then discusses the properties of substances and elements, such as metals and gases, and how these properties can be used to identify unknown substances. It emphasizes the importance of not tasting unknown substances and suggests using methods like dissolving in water to differentiate them. Finally, it demonstrates identifying a metal object using touch and magnetism.

What can properties of items help us do?

• Increase their size

• Predict the weather

• Identify or categorize them

• Change their chemical structure

What are metals often attracted to?

• Wood

• Magnet

• Water

• Plastic

What is a key characteristic of metals?

• Poor conductivity

• High reflectivity

• Dullness

• Non-magnetic

Which of the following is a property of all metals?

• Brittleness

• Conductivity

• Transparency

• Flexibility

Which property is common to all gases?

• Heaviness

• Transparency

• Solid shape

• Colorfulness

What happens when gases are placed in a container?

• They become liquid

• They expand to fill it

• They maintain their shape

• They shrink

Tags

NGSS.MS-PS2-2

What does not dissolve in water?

• Salt

• Sugar

• Sand

• Baking soda

How can you tell sugar from sand?

• By smelling

• By tasting

• By dissolving in water

• By freezing

Which property would indicate an object is likely a metal?

• Squishiness

• Lightweight

• Malleability

• Attraction to magnets

What does malleability refer to?

• Ability to resist changes

• Ability to change shape

• Ability to conduct electricity

• Ability to attract magnets