1.2 Flashcards
What are the 3 states of matter?
Liquid, solid and gas
What is matter?
Anything that had mass or volume.
What’s is mass?
Mass is the amount of matter in a substance.
What is volume?
The amount of space that an substance takes up or occupies.
What is chemical change?
It is a change in matter that occurs when substances combine to form a new substance. They change when there is a change in temperature.
What is physical change?
The change in appearance is a substance.
What is the difference between physical and chemical change?
chemical change involves reactions to form of a new substance. Physical change is the change in appearance but no new substance form.
What is a solid?
Has defined mass and volume.
What is a liquid?
Has a defined volume but not a shape.
What is a gas?
It does not have a defined volume or shape
What is a “model” in science?
It is a way to think about and interpret naturals events or objects.
What is a theory?
A theory is a scientific explanation based on a results of an experimentation.
What is the particle of matter model?
- All matter is made up of very particles.
- There are spaces between the particles but the amount of space between particles is different for different sates of matter.
- The particles of matter are always moving
- Particles are attracted to each other and the strength of the attraction depends on the type of particle.
Solid to a liquid?
Melting
Liquid to solid?
Freezing.
Solid to gas
Sublimation.
Liquid to gas?
Evaporation.
Gas to liquid.
Condensation.
Gas to solid?
Deposition.
A solid has a defined __ and __
Shape and volume.
A liquid has a defined __ and ______
Volume and not a defined shape.
A gas has a defined _____
Nothing
What is an atom?
The smallest particle of an element that retains the properties of that element.
What is boiling point?
The point where a liquid turns into a gas.
What is conductivity?
The ability to conduct electricity or heat.
What is density?
Density is the ratio of mass to volume.
What is an electron?
An negatively charged subtonic particle found in shells of an atom.
What is an element?
A pure substance that cannot be broken down or be made into smaller substances
What is mass?
The amount of matter that makes up an substance or an object.
What is the melting point?
The melting point is when a solid changes into a liquid.
What is a neutron?
A neutron is a subtonic particle with no charge.
What is the nucleus?
The nucleus makes up 99.9% of the mass of a atom and .1% of its volume. It is made up of protons and neutrons ad always has a positive charge.
What is a proton?
A proton is a positively charged subtoc particle that is found in the nucleus.
What is state?
State is a property of a substance describing it as a solid, liquid, or gas.
What is a subtonic particle?
There are 3 types of a subtonic particle: a neutron, proton and electron. They all make up the atom.
What is volume?
The punt of space taken up by a substance or object usually measured by litres.
