Which of the following represents a chemical change?

A. Bending a wire

B. Freezing of water

C. Fireworks exploding

D. Melting of a wax candle

:D

In class 1500 students 1200 present find absent percentage

Assume you had a silver sphere with a mass of 1.50kg. calculate the diameter of the sphere (in cm). the density of silver is 10.5 g/cm^3. the formula for the volume of a sphere is ... v = 4/3 3.14 r^3

How does the arm wrestling tournament represet what Rutherford found out about the positive and negative charges and atom

Which statement best describes the lattice structure of solid sodium chloride? A. Each sodium ion is surrounded by one chloride ion. B. Each chloride ion is surrounded by two sodium ions. C. Each chloride ion is surrounded by four sodium ions. D.

Name an element that has properties similar to those of Chlorine. Don't need to explain

When a volcanic irruption adds new rock to existing land and forms new islands is it considered destructive?

How many neutrons are in Cesium-130 (Cs) ? 55 75 130 185

An atom in a pure metal that's face-centered cubic has ___ neighbor atoms.

Rank the following bonds from strongest to weakest and provide the bond energy: the bond between hydrogen and oxygen in a water molecule; the bond between sodium and chloride in the NaCl molecule; the bond between atoms in a metal;

In an endothermic reaction do the reactants or the products have the lower potential energy