How is water different from most liquids?

It expands when it freezes.

It contains chemical bonds.

It has ionic and covalent bonds.

It boils when it is heated.

What is the most basic building block of matter? the electron the proton the quark the atom 2nd question: Which part of an atom has a negative charge? neutron nucleus proton electron

Pb (OH) 2 + _HCI → __ H2O + _ PbCl2

Which particle moves around the nucleus? Electron Molecule Neutron Proton

Examine the general structure of a molecule. C is bonded to R to the left, C O O H above right, H right, and N H 2 below left.

What has 20 electrons in 44 Mass

How do you know if the reaction is exothermic or endothermic if both phase are same?

How many elements are in a set whole numbers between 3 and 15

Calculate the percent activity of the radioactive isotope strontium-89 remaining after 5 half-lives.

Describe 2 theories for yawning

When a bimetallic bar made of copper and iron strips is heated, the bar bends toward the iron strip. the reason for this is?