Mixtures and Pure Substances

Front

Dry ice is solid carbon dioxide, or CO2. Dry ice may be used as a cooling agent and contains two oxygen atoms bonded to a carbon atom. Dry ice is a ___________________ .

Back

pure substance

Front

Instant coffee is made by dissolving a powder in hot water. Instant coffee is a ___________________ .

Back

mixture

Front

Baking soda is the common name for sodium bicarbonate, or NaHCO3. It can be produced through chemical reactions involving carbon dioxide and sodium hydroxide. Is it a pure substance or a mixture?

Back

pure substance

Front

Cake batter is a substance that may contain flour, eggs and sugars mixed by hand or with an electric mixer. Cake batter is a ___________________ .

Back

mixture

Front

Blood is a fluid found in the bodies of humans and other animals. It can be physically separated into plasma, red blood cells and white blood cells. Blood is a ___________________

Back

mixture

Front

Methane is a ___________________ .

Back

pure substance

Front

Chalk is a mineral found in rocks. It contains carbon, oxygen and calcium atoms. Chalk is a ___________________ .

Back

compound

Front

Nickel is a ___________________ .

Back

element

Front

Ammonia is a colorless gas with the formula NH3. Ammonia contains hydrogen and nitrogen and cannot be broken down physically. Ammonia is a ___________________ .

Back

compound

Front

Each noble gas is a(n) _______ .

Back

element