Separation techniques, Acids, Bases - PKT

Which separation technique is used to obtain salt from seawater?

• Simple distillation

• Filtration

• Chromatography

• Evaporation

Which ink is most soluble?

• Blue

• Red

• Yellow

• Green

During filtration, the solid that is trapped in the filter paper is called ..A.. and the liquid that has passed through the filter paper is called ..B..

• A: residue B: filtrate

• A: residue B: filterate

• A: filtrate B: residue

• A: filterate B: residue

Which one of the following is the name for separation technique in the picture below

• distillation
• dissolving
• evaporation
• decanting

Name the separation technique

• Filtration

• Evaporation

• Distillation

• Separation

Most of the elements on the periodic table are classified as _____.

• Metals
• Nonmetals
• Metalloids
• Periods

What is Reactivity?

• The characteristics of a substance that can be observed without changing the identity of the substance.
• A property making a substance react with certain substances
• When a substance combines with another to form a new substance.
• I really don't know at all.

This picture shows an element that is in group 16, period 3. Is it a metal, nonmetal or metalloid?

• metal

• metalloid

• nonmetal

• megalloid

Nonmetals are found:

• to the left of the stairstep line

• to the right of the stairstep line

• along the stairstep line

• all over the periodic table

What determines the chemical reactivity of an atom?

• protons

• valence electrons

• electron shells

• neutrons