Bellwork: Happy Friday!

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Presentation transcript:

Bellwork: Happy Friday! Please open your notebooks and copy down the graphic organizer (you can find it in your group binder) You may trace it if you want. Make sure you also outline the boxes with the correct colors.

Today’s Goal Be able to recognize that there are a finite number of elements that make up everything Describe how matter can be broken down into smaller and smaller parts and how these parts can combine to make different materials.

Anything that has mass and takes up space What is Matter? Anything that has mass and takes up space This includes solids, liquids and gases AKA: Stuff

Anything that has mass and takes up space

Elements, Atoms, molecules, oh my! Element: a substance that cannot be broken down into any other substances by chemical or physical means. There are over 100 known elements Each element has a 1 or 2 letter abbreviation Ex: oxygen is O, and Calcium is Ca Atom: the basic particle from which elements are made. Molecule: a group of two or more atoms held together by chemical bonds.

a substance that cannot be broken down into any other substances by chemical or physical means

The element of Helium is made of a single Helium atom. Written as H. Oxygen molecules are made of 2 bonded oxygen atoms. Written as O2 The compound water is made of two elements: H and O2. Together, the make H2O

Figure 2 Complete Figure 2 on page 97 of your new packet!

Figure 2 Carbon Dioxide 2 oxygen atoms 1 carbon atom CO2 Water 2 hydrogen atoms 1 oxygen atom H2O Oxygen 2 oxygen atoms O2 Ammonia 3 hydrogen atoms 1 nitrogen atom NH3

Compounds A substance made of two or more elements that are chemically combined in a set ratio Ex: Water (H2O), ammonia (NH3), and carbon dioxide (CO2) So, in water, there are always 2 hydrogens to 1 oxygen

But what is a substance? A substance that cannot be broken down into any other substances by chemical or physical means A substance made of two or more elements that are chemically combined in a set ratio

Anything that has mass and takes up space Elements and compounds that have not been mixed with other elements and compounds

Mixtures do not have a set ratio like a compound When 2 or more substances combine together in the same place, but their atoms are not chemically bonded, this is a mixture. Mixtures do not have a set ratio like a compound The substances in the mixture retain (keep) their own properties

There are 2 types of mixtures! Anything that has mass and takes up space There are 2 types of mixtures! Elements and compounds that have not been mixed with other elements and compounds When 2 or more substances combine together in the same place, but their atoms are not chemically bonded

You can usually see the different parts, and they can be separated A substance that cannot be broken down into any other substances by chemical or physical means A substance made of two or more elements that are chemically combined in a set ratio You can usually see the different parts, and they can be separated Substances are so evenly mixed that you cannot see the different parts. It is difficult or impossible to separate.

Complete Figure 4! Determine whether these 3 items are heterogeneous or homogeneous mixtures!

Have a great Weekend!

Welcome! Bellwork: Matter Create your own graphic organizer to show the organizational structure of matter Element Atom Molecule Substance Include these terms: Mixture Heterogeneous Homogeneous

Today we will learn: How a solid, liquid and gas is described Today’s Goals Today we will learn: How a solid, liquid and gas is described What happens to a solid as it melts What happens to a substance that becomes a gas

Solids Particles (atoms) in solid objects are in a fixed, closely packed arrangement. This causes it to have a definite shape and volume. A solid does not fit the shape of its container, it retains its form. Two types- crystalline and amorphous

Types of Solids Crystalline Amorphous particles form a regular repeating pattern- these form crystals When heated, it melts at a specific temperature Amorphous Particles are not arranged in a regular pattern No distinct shape Does not melt at a distinct temperature- may melt, become softer or change

Crystalline or Amorphous? Plastic ball pit balls

Crystalline or Amorphous? Pyrite (Fool’s Gold)

Crystalline or Amorphous? Candle

Crystalline or Amorphous? Glass

Crystalline or Amorphous? Snow Flake

Liquids Has definite volume, but no shape Particles are packed tightly, but are able to freely move around each other Liquids are able to flow and take the shape of their containers

Properties of Liquids Surface Tension: Viscosity: an inward force, or pull, among the molecules in a liquid that brings the molecules on the surface closer together. a liquid’s resistance to flowing Water and vinegar have low viscosity, meaning that they flow easily Honey has a high viscosity, it flows sloooowwwlllyyyy.

Gases No definite shape No definite volume Gas particles move in all directions and fill the shape and volume of their container.

Pressure The force of a gas’s outward push divided by the area of the walls of the container Pressure is measured in units called Pascals (Pa) Pressure= Force/Area

Figure 6 & Do the math! Complete them!

See you tomorrow!

Melting Melting is the change in state from a solid to a liquid This is a physical change

Freezing and Boiling Point

Properties of water https://www.youtube.com/watch?v=aVmU3CLxvgU