A star is born whenever nebula expands ... True or false?

A star system has at least three stars ... True or false?

Which is the best explanation for what keeps a balloon inflated Select one: a. gas particles colliding with the inside of the balloon b. gas particles being attracted to each other c. gas particles colliding with each other d.

The spectra for elements are A) all the same B) all The same for chemical family C) The same for elements with similar mass D) all different specific to each

Equation for the reaction of water and HCL (g)

Which compound is more soluble in an acidic solution than in a neutral solution?

Do states need to be written in a chemical equation

During an investigation, similar effervescent tablets were dropped into a beaker containing cold water and a beaker containing tap water. The table below shows an incomplete record of the investigation.

The air above earth's surface is at a different temperature what is responsible for this difference in temperature

The radioactive isotope tritium decays with a first-order rate constant k of 0.056 year-1. what fraction of the tritium initially in a sample is still present 30 years later?

A covalent bond in which electrons are shared unequally

Transferring or sharing electrons between atoms forms