A chemical element is a substance that contains only one type of atom. If a substance contains more than one type of atom, it is a compound. An element can be a solid, liquid or gas. The smallest particle of such an element is an atom. Atoms are made up of protons, neutrons, and electrons.
DIY home installed concrete countertops cost $8-$15 per square foot for materials, running $240-$450 for a typical 30 square foot kitchen counter. Professionally built and installed concrete countertops cost $70-$100 per square foot, or $2,100-$3,000 for a typical 30 square foot kitchen counter.
1 - 3 of 6 videos. On average, expect countertops to range in price from $40 to $100 per square foot installed, according to a 2013 report by Consumer Reports. Granite countertops range from $50 to $250 per square foot, while tile counters can start at as little as $10; butcher block at $30, and solid surfaces at $35.hen you discover the world of eco-friendly or stone-look surfaces, the answer is absolutely.. Tiled Kitchen Countertops. Update your kitchen countertops for less: at as little as $10 per square foot installed, tiled kitchen countertops are a great solution for style-savvy, cost-conscious consumers.