Which of these statements best describes the relationship between matter, pure substances, and mixtures? (2 points) a Pure substances can be divided into two groups: matter and mixtures. b Matter can be divided into two groups: pure substances and mixtures. c Mixtures and matter are two of many different types of pure substances. d Pure substances and matter are two of many different types of mixtures.

50 g of ice at 0°c is dropped in a beaker containing 100 g of water at 0°c. what will be the contents of the beaker after 5 hours? assume that the room temperature is 0°c.

In which situation has the independent variable for the experiment been changed? check all that apply. changed from counting the number of duckweed at day 0 and day 14 to counting them every day changed from testing duckweed growth in beakers to testing duckweed growth in large outdoor tanks changed from testing the effect of ph on duckweed growth to testing the effect of light levels on duckweed growth changed from testing the effect of acid ph on duckweed growth to testing the effect of basic ph on duckweed growth

Which of the following statement is false