What's the difference between groups and periods in a periodic table?

What is the requirement for a core to be used in an electromagnet?

In which of the following situations or places would you want to reduce the force of friction? More than one answer A. Skiing down a hill during a race. B. Walking down a steep hill. C. Sitting in the bed of a pickup truck while it turns a corner. D.

Which subatomic particle will you add or remove from an atom to create a new element? A - protons B - neutrons C - electrons

Define newton's 3 laws of motion

How to convert 3.500ma into electricity

The mass is increased by a factor of four. What is true about the period? Choose the best answer. The period remains unchanged. The period increases by a factor of four. The period is halved. The period doubles.

What does law of conservation of mass mean?

Why do substances with free electrons make the best conductors.

Which of the following is evidence that groundwater causes erosion and deposition?

Which project involved the goal of orbiting a manned spacecraft around earth? A. Mercury B. Apollo C. Gemini D. Skylab