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What is two or more substances that are not chemically mixed together what is two or more substances that are not chemically mixed together?
Two or more substances that are not chemically combined make up a mixture.
What is mixed with water to make brine?
salt
What conducts electricity when mixed with water?
Water in general is a good conductor of electricity. Anything wet will therefore be a good conductor (this makes it dangerous to get certain things wet).Actually, pure (distilled) water is not a good conductor; the fact that water usually IS a good conductor is due to diverse substances dissolved in water, such as salts - the ions make the water a good conductor.
What two liquids are mixed together to make bubbles?
Soap and water.
What substances make up 75 to 90 of every cell in the human body?
This substance is called water.
What two substances must be mixed with cement to make concrete?
1) sand 2) water
What makes glass and concrete?
Both glass and concrete contain sand. Sand is melted to make glass. It is mixed with aggregate (gravel) portland cement and water to make concrete.
Why mixing sugar and water a physical change?
you don't make any new substances, the sugar is just mixed very well into the water
What is two or more substances that are not chemically mixed together what is two or more substances that are not chemically mixed together?
Two or more substances that are not chemically combined make up a mixture.
When cement is mixed with gravel what important material does it make?
Concrete.
Is mixing mud sugar and water a physical or chemical change?
you don't make any new substances, the sugar is just mixed very well into the water
How heavy is a bag of cement?
From the largest manufacturer of backaged Portland Cement, bags come in 92.5 lb bags. To be clear, cement is mixed with sand and often aggregate (pea-gravel up to much larger rocks or other things such as broken out concrete chunks) to make concrete. Portland Cement by itself has no structural integrity when mixed with water. It must be mixed with sand at a minimum to make a hard, useful product (concrete). Concrete comes in bags weighing 50, 60, and 80 pounds here in the US.From the largest manufacturer of backaged Portland Cement, bags come in 92.5 lb bags. To be clear, cement is mixed with sand and often aggregate (pea-gravel up to much larger rocks or other things such as broken out concrete chunks) to make concrete. Portland Cement by itself has no structural integrity when mixed with water. It must be mixed with sand at a minimum to make a hard, useful product (concrete). Concrete comes in bags weighing 50, 60, and 80 pounds here in the US.
When mixing to make concrete what do you add to the mix last sand water or cement mix?
The water should be added last. All the aggregate materials and the cement should be thoroughly mixed before the water is added.
What are some of the tools to make concrete?
The most important tool needed when making concrete is a concrete mixer. Once the concrete is mixed and lain it is also important to have equipment to smooth out the surface.
Is wet concrete heavier then dry concrete?
Concrete is made of a mixture of cement, aggregate (small stones), fine aggregate (sand), water and other chemical additives. When mixed the wet concrete will remain so for Most people assume that set concrete has no water in it, this is not so, as the water content helps bond the aggregates and cement, this process is known as Hydration. Concrete with no water in it would crumble to dust. Adding more water to the mix will make a concrete that is easier to work, while less water will produce a stronger, more durable concrete. After initial setting of the concrete, a slow amount of water loss is expected due to the concrete drying, it can take anything up to a year for water to stop evaporating slowly out of the concrete. So for this reason the answer to your question is yes, dry, set concrete will weigh less than wet concrete, but for anything up to a year it will keep getting lighter, due to waterloss.
Is Pre mixed concrete better or bagged concrete?
Pre-mixed concrete is beter as it made to BSI standards and hand mixed (dry bagged) can be weakend by an inexperianced person mixing it. But it depends on what you are using the concret for; if its just a slab for a garden shed to go on it dose not realy make much differance, but if its structural you best get it pre-mixed. Regards Colin
What should be mixed to get copper?
Copper is an element in and of itself - you can't "mix" any other substances to get it. Copper is mixed with zinc to make brass, or with tin to make bronze.
