how do you know which metal is which

If you go to the picture on the website they are labeled. The oranger colored one is Copper while the golden one is Brass. The brightest and lightest one is Aluminum. the darkest and heaviest one is Lead. The you have left zinc and iron which are very similar in color, but iron is slightly heavier and the zinc has a slight brown gray to the silver color.

Are the edges beveled or sharp when you receive them

The edges are as seen in the photograph. Not necessarily sharp, but not beveled either.

Want to use them as feet for 12”x12” granite remnant Will this work?

They are solid metal and teeny. So they most likely wouldn't be noticed underneath, but given the weight of granite I would think you would need two sets with probably 3 per side and the remaining maybe as 4 corners of a square in the middle so it doesn't buckle or crack over time especially if something comes down on it hard. The silver colored ones are similar enough to look the same if you put on the outside while putting the brass and copper on the inside. Assuming the 12x12 remnant is laying parallel to a surface like a cutting board.

Could we use this fir a water experiment? To test for metals in water

These are designed for density and specific gravity experiments. They aren't designed for testing for metal in water.

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Density Cubes, Set of 6 Metals, 0.4" (10mm) sides - Brass, Lead, Iron, Copper, Aluminum, Zinc - For use with Density, Specific Gravity Activities - Eisco Labs

Density Cubes, Set of 6 Metals, 0.4" (10mm) sides - Brass, Lead, Iron, Copper, Aluminum, Zinc - For use with Density, Specific Gravity Activities - Eisco Labs

Product ID: 106294791

Details

Brand
Eisco
Item dimensions L x W x H
15.2 x 10.2 x
Item weight
0.05 Kilograms
Number of items
1
UPC
849230036522

📏Compact 0.4" (10mm) cube size for easy handling

🔬Ideal for hands-on density & specific gravity experiments

⚖️6 distinct metals for precise density comparison

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Description

⚗️ Unlock the weight of knowledge with every cube!

STEM READY - Perfect for elevating physics and chemistry lessons with real-world density applications
METAL MASTERY - Explore brass, lead, iron, copper, aluminum, and zinc in one sleek set
COMPACT PORTABLE - Small enough to fit in your lab kit or backpack for on-the-go experiments
PRECISION IN YOUR PALM - Uniform 10mm cubes ensure consistent, accurate measurements every time
TRUSTED EDUCATIONAL TOOL - Backed by Eisco Labs, a leader in science education supplies

The Eisco Labs Density Cubes set includes six 10mm metal cubes—brass, lead, iron, copper, aluminum, and zinc—designed for hands-on density and specific gravity experiments. Compact and precise, these cubes help students and professionals alike visualize and quantify mass-to-volume relationships, making complex physics and chemistry concepts tangible and engaging.

Specifications

ASIN	B0108XKPNK
Best Sellers Rank	865,283 in Toys & Games ( See Top 100 in Toys & Games ) 7,268 in Educational Science Kits
Brand Name	Eisco
Customer Reviews	4.1 4.1 out of 5 stars (217)
Global Trade Identification Number	00849230036522
Item Dimensions	15.2 x 10.2 x 10.2 centimetres
Item Weight	0.05 Kilograms
Manufacturer	Eisco
Manufacturer Part Number	PH0106
Model Number	PH0106
UPC	849230036522

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