What is the state of matter for water at 100°C?
Which particle has a positive charge?
What state of matter has a definite volume but no definite shape?
What is the charge of a neutron?
What forms the nucleus of an atom?
What do we call substances made of two or more elements?
Which state of matter has no fixed volume or shape?
Which particles are found outside the nucleus?
What is the atomic number of an element?
What can change a solid directly into a gas?
What do atoms combine to form?
Which state of matter contains particles that vibrate in place?
What happens to gas particles when cooled?
How are metals generally characterized on the periodic table?
What is the process of changing a gas to a liquid called?
Identify how many valence electrons are found in the atom model below.
What are valence electrons?
Which group on the periodic table contains noble gases?
Which group contains reactive metals?
How many periods are in the periodic table?