ATOMS AND ATOMIC THEORY
This is the smallest unit of an element that retains its properties.
What is an atom?
Particles in this state vibrate in fixed positions but stay close together.
What is a solid?
This property measures the amount of matter in an object.
What is mass?
Rubbing your hands together converts this energy to thermal energy.
What is mechanical energy?
This property tells how well a material dissolves in water.
What is solubility?
These negatively charged particles orbit the nucleus of an atom.
What are electrons?
Particles slide past each other but remain close together in this state.
What is a liquid?
This is the measure of gravitational pull on an object.
What is weight?
A toaster converts this form of energy into heat and light.
What is electrical energy?
Iron can be separated from a mixture using this property.
What is magnetism?
The dense center of an atom contains these two subatomic particles.
What are protons and neutrons?
Particles are far apart and move freely in this state of matter.
What is a gas?
This unit is used to measure mass.
What is a kilogram?
Plants convert sunlight into this type of stored energy.
What is chemical energy?
This property measures how well a material conducts electricity.
What is electrical conductivity?
When a neutron is removed from a carbon atom, this property changes slightly, but the element stays the same.
What is mass?
When ice melts to water, particles gain this type of energy.
What is kinetic energy?
Density is calculated using this formula.
What is mass divided by volume (D = m/V)?
Energy of water stored in a dam is called this before it flows.
What is gravitational potential energy?
Elements are grouped in the periodic table according to similarities in this.
What are chemical properties?
Atoms of different elements combine in countless ways to form these substances found in living and nonliving things.
What are compounds?
The model showing widely spaced, fast-moving particles represents this state of matter.
What is gas?
A rock sinks in water because its density is greater than this.
What is 1 g/cm³ (density of water)?
Energy changes from potential to kinetic when a ball is dropped, demonstrating this principle.
What is energy transformation?
Salt (NaCl) is formed when sodium and chlorine atoms combine to form this.
What is a compound?