Chemical changes affect matter.

before you begin writing, think about the different examples of chemical changes we have discussed in class and how different kinds of chemical changes that can occur in matter.

pretend you are an uncooked egg; now describe what happened to you when you were placed in a pot of boiling water.

be sure to include the following in your response: energy, molecules, and chemical change.

/* package whatever; // don't place package name! */

import java.util.*;

import java.lang.*;

import java.io.*;

class nestedloops {

public static void main (string [] args) {

int numrows = 4;

int numcols = 5;

int i,j;

char ch = 'a';

// note: you'll need to declare more variables

/* your solution goes here */

for ( i = 0; i < numrows; i++) { // outer loop runs for numrows times

for ( j = 0; j < numcols; j++) { // inner loop runs for numcols times

system.out.print(i+1);

system.out.print((char)(ch+j));

system.out.print(" ");

}

}

system.out.println("");

return;

}

}

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.