Maddie went for a walk in the rain, and one of her 600-gram rain boots got covered in mud. To clean her rain boot, Maddie washed it in a bucket with 800 grams of water. After a few seconds, Maddie noticed a change. Her 600-gram rain boot was clean. The bucket was filled with 1,000 grams of muddy water.
What is the mass AFTER THE CHANGE?

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

he would use the colour black

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.