Pure Substances and Mixtures Flashcards

Pure Substances

• Pure substances consist of a single type of particle and have uniform properties throughout.
• Sugar (C6H12O6) is a pure substance, representing a single chemical compound.
• Iron is a pure metal and an element, characterized by its unique physical properties.
• Gold is a pure element, known for its malleability and conductivity.
• Water (H2O) is a pure substance, essential for life, it consists only of hydrogen and oxygen molecules.
• Baking soda (sodium bicarbonate, NaHCO3) is a pure chemical compound commonly used in baking.
• Elements such as carbon are considered pure substances, as they cannot be broken down into simpler substances.
• Hydrogen molecules (H2) are also a pure substance, representing the simplest form of matter.
• Oxygen (O2) is a diatomic molecule and a pure gas crucial for respiration.
• Carbon dioxide (CO2) is a pure compound, formed from carbon and oxygen atoms.
• Atoms represent the simplest form of pure substances, the basic building blocks of matter.
• Compounds are pure substances formed from two or more elements chemically bonded in fixed proportions.

Mixtures

• Mixtures consist of two or more substances combined physically, retaining their individual properties.
• Salad dressing is a mixture, typically containing oil, vinegar, and spices, with components that can be separated.
• Milk is a colloidal mixture of fat globules and water along with dissolved lactose and proteins.
• Fish tank water is a mixture containing various dissolved minerals, beneficial bacteria, and organic matter.
• Atmospheric air is a mixture of gases, primarily nitrogen, oxygen, carbon dioxide, and trace gases.
• Smarties and nuts together form a mixture that retains their separate identities and properties.
• Colored water is a mixture where dyes or pigments are dispersed in water.
• Cake mix is a combination of different dry ingredients that are mixed but not chemically altered.
• Solutions typically consist of a solute dissolved in a solvent, such as saltwater.
• Iced tea is a mixture of tea, water, and possibly additional flavorings or sweeteners.
• A muddy pond is a mixture comprising water, soil, and organic matter, creating a turbid solution.
• Coke is a carbonated beverage and a mixture containing sugar, water, and various flavorings.
• The pit of balls is a physical mixture where individual balls maintain their distinct characteristics.