What two elements are most abundant in living things?
Oxygen and Carbon
100
A substance is brittle, an insulator and has dull luster. How would you classify it?
Non-metal
100
You classify metals, non metals and metalloids using ___________ __________.
physical properties
200
Water is a pure substance sometimes called H20. Is it an element?
No it can be broken down into seperate elements.
200
If a chemical symbol has 2 letters how should it be written?
The first letter capitalized and the second uncapitalized.
200
What element is most abundant in the Atmosphere?
Nitrogen
200
A mystery element is non-magnetic, conductive, malleable and has shiny luster. How would you classify it?
Metal
200
Classify these elements into 2 groups. Oxygen, Carbon, Calcium, Sodium
Calcium and Sodium are metals
Oxygen and Carbon are non-metals
300
Where can I find a collection of all elements?
The Periodic Table
300
What is the chemical symbol for Chlorine?
Cl
300
What element is most abundant in the Biosphere, Hydrosphere and Lithosphere?
Oxygen
300
What two properties are the opposite of brittle?
Ductile and Malleable
300
If an element is semiconductive, how would you classify it?
Metalloids
400
The smallest form of an element is an ____________.
Atom
400
Na is the chemical symbol for what element?
Sodium.
400
What do BLOC, LEOSi, AANO, and HOOH stand for?
Biosphere Living things Oxygen Carbon
Lithosphere Earth, Oxygen, Silicon
Atmosphere Air Nitrogen Oxygen
Hydrosphere, Oceans, Oxygen, Hydrogen
400
Fill in the blanks.
On the periodic table the Metals are on the ________,
the __________ are on the stair step and the non-metals are on the ___________.
left
metalloids
right
400
If you have a large group of dogs, how would you begin classifying them.
You have to decide on a rule
500
How many Elements are found in CaCO3?
Three.
500
What is the chemical symbol for Tungsten?
W
500
What does SPONCH stand for and what Sphere does it go with?