INTERACTIONS OF MATTER

CHEMICAL BONDING

Chemical Reactions

FORMING NEW SUBSTANCES!!!
During a chemical reaction atoms are rearranged and formed to new substances that have different properties than the original substance had.

IN A CHEMICAL REACTION

• Chemical Bonds Break
• Atoms Rearrange
• Absorb or Release Energy

SIGNS OF A CHEMICAL REACTION

• Change in Color
• Formation of a Gas
• Formation of a Precipitate
• Change in Energy

CHEMICAL FORMULAS AND EQUATIONS!!!
Chemical formulas and chemical equations are used to show how atoms are rearranged to form new substances in a chemical reaction.

Chemical Formulas!!!
Chemical Formulas is a simple way to describe which elements are in a chemical substance.

Chemical Equations!!!
a concise way to write how atoms are rearranged in a chemical reaction.

Balanced Chemical Equation!!!
Shows the law of conservation of mass

IONIC AND COVALENT COMPOUNDS

IONIC AND COVALENT COMPOUNDS

• An ionic bond is an attraction between opposite charged ions
• A chemical bond is an interaction that holds atoms and ions together
• Compounds that have ionic bonds are called ionic compounds
• Properties of ionic compounds are a result of strong attractive forces

ACIDS AND BASES

• Acidic solution has an increased number of hydronium ions
• Acids are sour and they react with many metals
• Bases are bitter and feel slippery

SOLUSTIONS OF ACIDS AND BASES

• Every molecule of a strong acid or a strong base produce ions in a solution
• The indicators and pH meters can measure pH

THE CHEMISTRY OF LIVING THINGS

Elements In Living Things

• Carbon has a central role in chemistry of living things.
• Some compounds have hundreds or thousands of carbon atoms.
• The carbon atom has for valence electrons.
• The carbon is based on molecules in diffrent shapes.

Compounds Of Living Things

• A complex carbohydrate could be a long chain polymer.
• Polymer means is a chain of repeating units.
• The cellulose gives cell walls in the plants rigid structure.
• Carbon is an element because it form long chain and with other elements.

Untitled Slide

Untitled Slide

ELECTRONS AND CHEMICAL BONDING

• Atoms share,gain,or lose electrons when they're bonds from.
• The number of valence electrons in a atoms will tell if it froms bonds.
• Most atoms form bond by using the electrons in the outermost energy
• Not always atoms bond in a same way. Some don't even bond at all

SECTION DOS (2)

• The positive ions are negative ions that form when the atoms are loose or gain electrons
• The ionic compound are solids by building up and by repeating pattern are called a crystal lattice

SECTION 3

• Covalent compounds are form when atoms of elements that share electrons.
• The atoms of metals are held together by metallic bonds