Ms Reed's Chemical reactions/Element test

What is the element symbol for Chlorine?

• C

• Ca

• Cl

• Cu

What is the element symbol for Calcium?

• Ca

• Cu

• Cl

• Cm

What is the element symbol for Carbon?

• C

• Ca

• Cl

• Cu

What is the element symbol for Sodium?

• Na

• S

• Su

• Sd

A one or two letter abbreviation used to represent an element is called a (n) ______

• chemical reaction

• element symbol

• atomic number

What is the ATOMIC NUMBER FOR SODIUM?

• 11

• 22.990

Where did Dr. Yung (the chemist near Westfield) find the reddish-brown substance when she examined all the possible sources?

• in the wells where the water comes from

• coming from the pipes into the houses

• in the ponds nearby the town

• in all water everywhere in Westfield

When explaining the following evidence, which is the best evidence we should use?

• ugly, color, solid

• white, small pieces

• white, small, grainy, crystals

• smelly, big, gross, color

Are these two samples the same substance?

• They are the same substances because they are both white powders.

• They are the same substances because they both have similar atomic structures

• They are different substances because they have different atoms making them up.

• They are the same because they both have the same number of atoms.

Select the FALSE definition for "Repeating groups of atoms"

• Repeating atoms are atoms that replicate themself.

• Repeating groups of atoms are substances made of the same group of atoms repeated over and over.

• Molecules are groups of atoms that form specific groups that are each separate and can range in size from two atoms to thousands of atoms.

• Extended structures are substances that in solid phase are made of many atoms or many groups of atoms that connect to form a large structures called crystals.