Write a sentence using the word chemical formula. Write a sentence using the word mixtures

Write a sentence using the the word pure substances

Write a sentence using the word molecule

Write a sentence using the word compound

Can someone help me write sentences out of these words you have to use your own words and not the internet.

In a water molecule, hydrogen and oxygen are held together by a(an) bond. a) double covalent b) ionic c) nonpolar covalent d) hydrogen e) polar covalent

How might this scientific phenomena be explained? a paper clip floats on water.

The lattice enthalpy (formation of ionic solid from ions in the gas phase) for agcl(s) is -916 kj/mol and the hydration enthalpy (dissolution of gaseous ions into water) is -850 kj/mol. how much heat (in joules) is involved in forming 1l of saturated agcl solution (1.8 × 10-4 g / 100 ml water) by dissolving agcl(s)? assume solution volume does not change much upon dissolution. the equations are given below. ag+(g) + cl−(g) æ agcl(s)