Answer:
Light travels in a straight line until it strikes an object.
As white light passes through a prism , it bends and separates into different colors
Answer:i dont know the answer
Answer:
Volume of the sulfuric acid (25cm³), same mass of each metal (1g)
Explanation:
In an experiment, the CONTROL VARIABLE also known as constant is the variable that is kept unchanged for all groups in an experiment. This is done in order not to influence the outcome of the experiment.
In this case, students are trying to investigate the reactivity of four different metals. They added 1 g of each metal to 25cm³ of sulfuric acid and recorded the temperature change. Based on the explanation of control variable above, the VOLUME OF SULFURIC ACID (25cm³) and the MASS OF EACH METAL (1g) are the CONTROL VARIABLES because they are the same or unchanged in this experiment.
they can find dna at the crime scene wich will lead them to the guilty party
Answer:
Explanation:
The modern model recognizes particles in the atom, whereas Dalton's model does not.
