Can anyone be a scientist

Can a pregnancy test show negative then positive following day on same test? What causes the pressure that a gas exerts on the wall of its container? A change in can bring about a change in air pressure? How many moles of MgCl2 are there in 313 g of the compound? What is 32kg in pounds? The natural tendency of an object to remain at rest or in motion with an constant velocity is called? What are non-examples of filters? Many business computers have three distinct and world wide unique identifires what are they? What is a good conclusion about obesity? What is a bombuclat? How are particles in oxygen arranged? What observation mean in the scientific method? What does a psychrometer look like? What does 480 cm equal in meters? What is a correct method used in a scientific experiment involving acid and base solutions? What recovery method uses special? Is tin foil Translucent Transparent opaque? What is a special thermometer that measures temperature continuously? What is a inselater? What will happen if the mongo seed is exposed to wet cotton and left for 5 days?