Question

1. karsandra and alex conducted an experiment where they heated water in a beaker on a hotplate. they recorded their results in the table below. mass of water mass before heating (g) 10.0 g mass after heating (g) 6.5 g which of the following statements is true based on the results? a the law of conservation of matter was broken in this experiment because the mass of the water decreased after heating. b the law of conservation of matter was not broken because the water was heated in an open beaker, letting gases escape. c the law of conservation of matter was not broken because the mass before heating was greater than the mass after heating. d the law of conservation of matter was broken in this experiment because the water was heated in an open beaker, letting gases escape. read the passage - passage 12425 - and answer the question below: passage 12425 read the passage and answer the following question(s). passage 12425 directions: read the passage about the effect of different types of changes on mass. three students were working together in the science lab at school. they wanted to investigate how different types of changes affect the mass of substances. they each planned to use different activities in their investigation. activity 1 one student places a beaker on a laboratory scale and adds 250 milliliters of water. he then adds 50 grams of sugar to the beaker and stirs until the solution is clear.

Explanation:

The law of conservation of matter states that matter is neither created nor destroyed in a chemical or physical change. In this experiment, water was heated in an open beaker. When water is heated, it can evaporate (turn into water vapor - a gas). In an open beaker, these gas molecules (water vapor) can escape into the air. So, the decrease in mass is due to the escape of water in the gaseous state, not because the law of conservation of matter is broken.

Answer:

B. The law of conservation of matter was not broken because the water was heated in an open beaker, letting gases escape.