Witch of the following are part of the scientific method

Which sample is a pure substance?

When a sodium atom bonds with a chlorine atom, it acquires positive charge true or false?

What are the four body systems that are involved of getting oxygen in our cells?

Which of the following statements is true? One variable of a gas affects only one additional variable of the gas. Several variables of a gas often change simultaneously.

What type of bond is formed between different molecules of water

What force (in newtons) is required to accelerate a body with a mass of 32 kilograms at a rate of 12 m/s2? If a body with a mass of 4 kg is moved by a force of 20 N, what is the rate of its acceleration?

A. draw the structure of the tetrahedral intermediate initially-formed in the reaction shown. reactions of esters with

The water level in a graduated cylinder stands at 20.0 ml before and at 26.2 ml after a 16.74 g metal sample is lowered into the cylinder. what is the density of the sample. what metal is the sample most likely to be

What are the tube feet on a star fish

What kingdom is humans in!