Dissolving sugar in water is a chemical change.

True

False

What event happens underwater to cause a tsunami?

In the reaction 2H2 + O2-->2H2O how many hydrogen molecules are needed to produce two water molecules

A student blows up a balloon, seals it tightly, and places it in a very cold freezer. After a few hours, the balloon has gotten smaller. Which of the following statements best explains the decrease in the balloon's volume? the multiple choice a.

When two 1s hydrogen atoms combine to form h2, the bond formed is:?

How can the periodic table be used to infer the number of valence electrons in an atom?

What is the charge of that particle? A). + e B).-2/3 e C).0 D).+2/3

How many palisade cells from plant leaves would fit in a volume of 1.0 cm cubed of cells if the average volume of a palisade cell is 0.0147 mm cubed?

Two examples of common items that use chemical change

Which has more mass, a 28.0-cm3 piece of lead or a 16.0-cm3 piece of gold? the density of lead is 11.4 g/cm3; the density of gold is 19.3 g/cm3?

If the body is a city what would it be