States & Particles
This state of matter has a definite shape and volume.
What is a solid?
A mixture that is evenly mixed throughout.
What is a homogeneous mixture (solution)?
A pure substance made of only one type of atom.
What is an element?
A push or a pull is called this.
What is a force?
Objects resist changes in motion because of this property.
What is inertia?
Energy stored in food or batteries.
What is chemical energy?
Heating a solid causes this change of state.
What is melting?
The substance that does the dissolving in a solution.
What is the solvent?
Cutting paper or dissolving sugar is an example of this type of change.
What is a physical change?
This force resists motion between two surfaces in contact.
What is friction?
If net force equals zero, motion does this.
What stays the same?
Heat transfer through direct contact.
What is conduction?
This model explains why gases can be compressed and diffuse.
What is the particle model of matter?
Adding more solvent to lower concentration is called this
What is dilution?
Evidence of a chemical change when a solid forms in a liquid.
What is a precipitate?
A flat line on a distance–time graph represents this motion.
What is no motion (stopped)?
The law described by F = m × a
What is Newton’s Second Law?
Bending of light as it enters a new material.
What is refraction?
This property explains why objects sink or float.
What is density?
In a closed system, total mass before and after a change does this.
What stays the same (is conserved)?
A chemical formula tells which atoms and this information.
What is how many of each atom?
A curved line on a distance–time graph shows this type of motion.
What is changing speed (acceleration or deceleration)?
For every action force, there is an equal and opposite _____.
What is a reaction force?
Heat transfer by movement of fluids like air or water.
What is convection?
Name two factors that increase the rate a solid dissolves.
What are temperature, agitation, or surface area?
Why does total mass stay the same when substances dissolve?
What is matter is not created or destroyed?
Name one difference between an element and a compound.
What is elements contain one type of atom; compounds contain bonded atoms in fixed ratios?
The support force exerted by a surface on an object.
What is the normal force?
Increasing impact time reduces force — this principle protects people in crashes.
What is impulse?
Why does a parallel circuit keep working when one bulb goes out?
What is it has multiple paths for current?