Science Quiz

During the aluminum foil and copper chloride reaction, what was observed?

• Only the blue liquid turned brown

• The solution bubbled violently and erupted like a volcano

• The temperature increased and a reddish-brown flaky substance appeared

• The solution only released steam

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

What determines if something is a property of a substance?

• It can be measured with scientific tools

• It remains constant regardless of the amount of substance

• It varies based on the size of the substance

• It changes depending on the shape

How is solubility best determined in a liquid?

• By measuring the time it takes to dissolve

• When the solid is no longer visible in the liquid

• By observing color changes

• By counting the bubbles released

What is the relationship between a substance's amount and its melting point?

• Larger amounts have higher melting points

• The melting point varies with substance quantity

• The melting point remains constant regardless of amount

• Only small amounts have consistent melting points

Why are synthetic materials like polar fleece useful?

• They are more expensive than natural materials

• They are always more durable than natural materials

• They can be hypoallergenic and lighter weight

• They only work better in cold weather

Tags

NGSS.MS-PS1-3

What makes soap effective at cleaning greasy substances?

• It chemically breaks down all substances

• It is soluble in both water and oil

• It creates a chemical reaction with water

• It traps grease and is soluble in water

How do scientists identify unknown substances?

• By comparing multiple properties

• By measuring mass alone

• By observing color only

• By testing solubility in water

Tags

NGSS.MS-PS1-2

What happens when a substance is truly soluble in a liquid?

• It breaks into smaller visible pieces

• It changes color but remains visible

• It completely disappears from view

• It floats to the top of the liquid

What is a characteristic of synthetic materials?

• They occur naturally in the environment

• They must be created through chemical reactions

• They are always more expensive

• They cannot be recycled

Tags

NGSS.MS-PS1-3

How does hardness compare between copper and bronze?

• They have equal hardness

• Copper is always harder

• Bronze has greater hardness

• Hardness depends on size