science review, properties and changes in matter

Condensation

When gas turns into a liquid.

Sublimation

When a solid turns into a gas.

Evaporation

When a liquid turns into a gas.

Melting

When a solid turns into a liquid.

Freezing

when a liquid turns into a solid.

Deposition

When a gas turns into a solid.

Freezing point

When a liquid changes into a solid. the freezing point for water is 0 degrees Celsius.

Matter

Matter is everything that takes up space and has mass/weight.

Chemical change

When matter connects differently to form a new product that can’t be reversed.

Physical change

When matter changes its appearance and can be reversed.

Do particles in a solid move faster or slower than the particles in a liquid or a gas?

Particles in a solid move slower than in a liquid or gas because they are packed tightly together.

What happens to the particles in a solid when they are heated?

The heat will cause the particles inside the solid to spread out and flow into the bottom of the container they are held in.

What is the difference between sublimation and deposition?

Sublimation is the process of a solid changing directly into a gas.

Deposition is when a gas turns into a solid.

The difference between sublimation and deposition is that one is about changing a solid into a gas, and the other is changing gas into a solid.

Explain how water goes through the 3 states of matter.

Water in its natural state is in liquid form. When water is put in the freezer and it reaches its freezing point, it turns into a solid. When you boil water to its boiling point (100C), it will turn into a gas.

How does heat affect matter? How does heat change matter from one state to another? Use some of the following terms in your answer: release, absorb, matter, freeze, melt, evaporate, condense, particles, heat (Long Answer)

-Heat makes particles move faster or slower, depending on how much heat is applied, and what state the matter is in.

-When liquid particles are heated up they start to move faster and evaporate into a gas.

-After a shower, the hot moist air (gas) condenses on the cold surface of a mirror creating fog (liquid).

-Gas needs to release a lot of heat in order to transform directly into a solid

-When solid matter rapidly absorbs a lot of heat, it changes into a gas without changing into a liquid first.

-Heat will cause particles inside a solid to move, particles will spread out and melt the solid to a liquid

How does the production of food affect our environment? Use some of the following terms in your answer: processing, waste, fossil fuels, transportation, ecosystems, chemical/physical changes.

The production of food affects our environment in the following ways:

-In order to grow crops, natural habitats and ecosystems have to be cut down and destroyed, this can lead to extinction in many cases

-When farmers spray herbicides and fertilizers on the farmland to prevent the growth of unwanted plants, the ecosystem is chemically changed

-Tractor and farm equipment used to extract crops are fueled by fossil fuels that are leading to climate change

-Wasted food produces carbon dioxide which is a greenhouse gas that contributes to climate change

-Packaged food products are transported to stores and the transportation requires trucks that use fossil fuels that are bad for the environment