What do we call matter made you of only one kind of atom? And Atoms have weight and take up space

6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?