Spheres
Which sphere contains all the LIVING THINGS on Earth, like plants and animals?
The Biosphere
What do we call a pure substance that cannot be broken down into anything simpler?
An element
What is formed when two or more different elements are CHEMICALLY joined together?
A compound
Which sphere is made up of all the SOLID, ROCKY parts of the Earth, like mountains and soil?
The Lithosphere
The chemical symbol for Gold is 'Au'. What is the symbol for Oxygen?
O
The chemical formula for water is H₂O. Is water an element or a compound?
A compound
The hydrosphere includes water in all three states. Name an example of water in its SOLID form that belongs to this sphere.
Ice / Glaciers / Snow / Icebergs
What are the vertical columns on the periodic table, where elements have similar properties, called?
Groups
The air we breathe is made of different gases like nitrogen and oxygen that are not chemically joined. Is air an element, mixture or a compound?
compound
The process of photosynthesis in plants (biosphere) is essential for life because it releases oxygen into which other sphere?
The Atmosphere
What is the name for the property of a metal that allows it to be bent and hammered into a different shape without breaking?
Malleability
If you mix sand and water, the sand will eventually settle at the bottom. What is the scientific name for a mixture where the parts can be easily seen and separated?
A suspension
A volcano erupts, sending ash into the air , which then blocks sunlight from reaching plants. How many spheres are interacting here?
3
Table salt is a compound with the formula NaCl. What are the names of the two elements that combine to make it?
Sodium and Chlorine
Iron is magnetic and sulfur is a yellow powder. When they are heated together, they form a new, non-magnetic black solid. Is this new solid a compound or a mixture, and why?
A compound, because a new substance with new properties was formed.