It makes mud, to an extent
Yes, Portland cement rocks, sand, and water are indeed a compound.
Sand in water is a mixture. Because you can differentiate between the sand and water, it is a heterogeneous mixture.
Sand in water is a heterogeneous mixture. The sand does not dissolve in the water, and the two components can be visibly distinguished.
No. Sand and sugar make a mixture as they retain their individual properties.
Sand is a mixture and rarely is only one compound.
A compound containing sand and gold could be a mixture of the two substances, where the gold particles are mixed with the sand particles. If water and iodine are added to this mixture, the water could dissolve the iodine to form a solution, leaving the sand and gold particles unchanged.
Sand in water is a mixture. Because you can differentiate between the sand and water, it is a heterogeneous mixture.
Sand and water mixed is a mixture. Elements are substances with only one type of atoms. Compounds are substances made up of chemically bonded particles. Since sand and water are neither of these, it must be a mixture.
Sand is silicon dioxide, formula SiO2
Three
Yes, quartz sand is a compound, because quartz is a compound.
Sand and water would be considered a heterogeneous mixture because you can see the individual components (sand and water) and they do not form a consistent composition throughout the mixture.