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Questions in Grade Middle-school

[Answered] When elements combine to form compounds, do their properties change?

[Answered] In the proportion \(\frac{2}{h} = \frac{k}{10}\), what happens to the value of \(h\) as the value of \(k\) decreases?

[Answered] The bacteria that produce food from the chemicals in the water surrounding hydrothermal vents deep in the ocean are called what?

[Answered] What element is mostly used in magnets, gold or cobalt?

[Answered] The model A CD burner burns 60 minutes of data in about 1.15 minutes. The model B CD burner burns 60 minutes of data in about 1.5 minutes. How much longer will it take to burn 80 minutes of data onto a CD using the model B burner than using the model A burner?

[Answered] Oscar is 16 years old, and his sister Julia is 12 years old. What will be the ratio of Oscar's age to Julia's age in 2 years? Write your answer as a fraction in simplest form.

[Answered] What is \(\frac{11}{14}\) minus \(\frac{1}{6}\) as a fraction?

[Answered] Is 0.00001 bigger than 0.001? Why?

[Answered] Lamika buys 12 packs of juice boxes that are on sale and pays a total of $48. How much will Lamika pay to buy 8 more packs of juice boxes at the same store?

[Answered] A ream of paper contains 500 sheets of paper. Norm has 373 sheets of a ream. Express the portion of a ream Norm has as a fraction and as a decimal.