Which state of matter has a defined volume but undefined shape

liquids

gasses

solids and liquids

liquids and gasses

What is the charge on an atom after it loses an electron during the formation of a bond?

How are the elements arranged in the modern periodic table g?

Potassium-40 has a half-life of 1.25 billion years (by) and decays to argon-40. how old is a fossil that has a 40k/40ar ratio of ~ 26%?

X (TRUE FALSE) : A full electron orbital always contains 8 electrons.

What chemical change occurs when a more reactive substance replaces a less reactive substance in a compound? a. Oxidative c. Reduction b. Displacement d. Endothermic

Which statement is the best description of a chemical bond? A. A chemical bond connects 2 different molecules. B. A chemical bond holds atoms together. c. A chemical bond turns molecules into atoms. D. A chemical bond identifies atoms in a molecule.

Is the atom indicated with an arrow nucleophilic, electrophilic, acidic, more than one of these choices, or none of these choices? (For purposes of this question, acidic is defined as pKa ≤ 25.) Select all that apply.

Na and Mg ions each have ten electrons surrounding their nuclei. which ion would you expect to have the larger radius? Explain your answer

A bowl of trail mix and a bowl of soup are examples of what type of matter? 9 (a) solution (b) heterogeneous mixture (c) element (d) compound

What's difference between "formula unit" and "molecule"?