All the subsatnces that make up everything in the universe are forms of matter. All matter has mass. We can find out how much matter an object contains by measuring its mass. We use a balance to find the mass of an object. Mass is measured in grams (g) and kilograms (kg), Therefore, a person with a mass of 60 kg has 30 kg more matter than a bag of cement with a mass of 30 kg. Of course, the matter consists of different substances!