GS 2nd Semester Final Review

Cold air falls and warm air rises...

• true
• false

The jetstream moves weather around the Earth.

• true
• false

Pure substances listed on the periodic table that can’t be broken down into separate parts are called

• elements
• compounds
• mixtures

Two or more elements or compounds combined physically like a glass of cola, Earth’s atmosphere, or brass.

• elements
• compounds
• mixtures

Pure substance like water (H2O) or table salt (NaCl) formed when two or more elements are chemically bonded together.

• elements
• compounds
• mixtures

The atomic number indicates the number of __________ in an element

• compounds
• electrons
• neutrons
• protons

The atomic mass indicates the number of __________ in an element

• compounds + elements
• electrons - protons
• protons + neutrons
• protons + electrons

Most elements in this class are solid, shiny, silver/grey; good conductors of electricity; malleable and ductile; and react with acids to make Hydrogen gas

• metals
• semi-metals / metalloids
• non-metals

Most elements in this class are non-conductive insulators; chalky, dull, or brittle; and occur natually as solid, liquid, or gas

• metals
• semi-metals / metalloids
• non-metals

Most elements in this class are semi-conductors and have characteristics of both the other classes of elements.

• metals
• semi-metals / metalloids
• non-metals