Atoms
The central, positively charged core of an atom that contains most of its mass.
What is the nucleus?
This is the term for a pure substance made entirely of only one kind of atom.
What is an element?
Any substance with a pH level below 7 is considered this.
What is an acidic substance?
These negatively charged subatomic particles flow through wires to create electricity.
What are electrons?
This form of energy is stored in food and fuels like gasoline.
What is chemical energy?
This subatomic particle has a negative charge and orbits the nucleus.
What is an electron?
The horizontal rows on the periodic table are referred to as these.
What are periods?
This famous scale measures how acidic or basic a water-based solution is, ranging from 0 to 14.
What is the pH scale?
Materials, such as copper or aluminum, that allow electricity to flow easily.
What are conductors?
When you rub your hands together, you create this type of energy due to movement.
What is kinetic energy?
This subatomic particle is located in the nucleus and has no electrical charge.
What is a neutron?
The vertical columns on the periodic table are called these.
What are groups (or families)?
A common acid-base reaction between an acid and a base produces water and this type of neutral ionic compound.
What is a salt?
Materials, such as rubber or plastic, that stop the flow of electricity.
What are insulators?
A hot cup of coffee has a lot of this type of energy, which relates to moving particles.
What is thermal energy?
These two subatomic particles have roughly the same mass and are both found in the nucleus.
What are protons and neutrons?
This Russian chemist created the very first version of the periodic table in 1869.
Who is Dmitri Mendeleev?
Bases release these specific negatively charged ions into a solution, which consist of one oxygen atom and one hydrogen atom (OH^-).
What are hydroxide ions?
In this type of circuit, electricity has only one single path to follow, meaning if one lightbulb breaks, all the others go out.
What is a series circuit?
This type of energy travels in waves and allows you to see the world around you.
What is light (or radiant) energy?
The number of these specific subatomic particles uniquely identifies an element and equals its atomic number.
What are protons?
In the modern periodic table, elements are arranged in order of increasing numbers of this.
What is the atomic number (or number of protons)?
According to the Brønsted-Lowry definition, an acid is a substance that donates one of these positively charged subatomic particles.
What is a proton (or hydrogen ion)?
The fundamental SI unit used to measure the rate of energy transfer or usage in an electrical circuit.
What is a Watt?
This type of energy is stored in an object when you stretch a rubber band or compress a spring.
What is elastic potential energy?