The number of blank in an atom of an element is the element's atomic number

How and why do ionic bonds form?

A litter of pigs is born. Three are female and three are male. Which set of symbols correctly describes the gender of each piglet? AA X, X, X, Y, Y, Y

aluminum has a density or 2.7g/cm3. copper has a density of 8.96/cm3. which metal would you choose to build a model airplane?

On a test, Helena is defining energy. Which must she include in order to get her answer marked correct? making objects more compact the ability to do work carrying through matter and space the bonds of atoms

Mechanical waves that travel through a. a vacuum b. outer space c. a black hole d. a medium

If a compound has a molar mass of 180 g/mol and its empirical formula is CH20, what is its molecular formula? CH20 C₂H4O2 C6H1206 C12H22011

Which element has six energy levels? A) rubidium (Rb) B) cesium (Cs) C) potassium (K) D) sodium (Na)

What is a segment of dna that contains a single unit of information?

Is carbon monoxide covalent or ionic?

Do all organisms perform meiosis?