Chemistry 2nd test HBEL7

Which particle in an atom has no charge?

• Electron

• Proton

• Neutron

• Nucleus

What is the periodic table used for?

• To classify mixtures

• To arrange and organize elements based on their properties

• To study the structure of compounds

• To measure the mass of atoms

The process by which gas turns into liquid is called?

• Freezing

• Melting

• Condensation

• Sublimation

Which of these is an example of a physical change?

• Burning wood

• Rusting iron

• Melting ice

• Cooking an egg

What happens during a chemical change?

• The material changes its size

• New substances with new properties are formed.

• The material changes its temperature

• No new substances are formed

Which of the following is NOT a chemical change?

• Iron rusting

• Milk souring

• Salt dissolving in water

• Paper burning

What are the horizontal rows on the periodic table called?

• Groups

• Periods

• Series

• Column

What are the vertical columns on the periodic table called?

• Periods

• Rows

• Halogens

• Groups

Which of the following is evidence of a chemical change?

• A change in shape

• A change in state

• Formation of a gas or new substance

• Dissolving a solid in a liquid

Which of the following is NOT a property of metals?

• Conducts electricity

• Shiny appearance

• Brittle

• Malleable