Mind your manners at the Table!
The number of protons in an atom is called its ___________?
What is its atomic number?
The three subatomic particles
What are protons, neutrons and electrons
The three types of chemical bonds.
What are ionic, covalent, and metallic?
The boiling point of water.
What is 212 degrees Fahrenheit, 100 degrees Celsius?
The smallest unit of matter
What is an atom?
The atomic mass represents the sum of which particles in an atom?
What are the protons and neutrons?
Protons and neutrons are found in the ___________ of an atom.
What is the nucleus?
A type of bond in which atoms share electrons.
What is a covalent bond?
The ability to explode is an example of a __________ property.
What is a chemical property?
A pure substance made of only one type of atom.
What is an element?
Name an element that is a gas at room temperature.
What are oxygen, hydrogen, helium, nitrogen, and neon?
The particle that has no charge.
What is the neutron?
A type of bond in which electrons are gained or lost between atoms.
What is an ionic bond?
The starting substances in a chemical reaction are called _____________ and the new substances made are called ___________.
What are reactants and products?
The element that has the symbol Na.
What is sodium?
Name two metals on the periodic table.
What are iron, copper, gold, silver, aluminum, etc.?
The electrons in the outermost shell are called ______________.
What are valence electrons?
The uneven distribution of electrons within the water molecule makes it this type of molecule.
What is a polar molecule?
Changes in chemical properties can be observed by what three things? Name one.
What are changes in color or odor, production of gases or solids, or releasing or absorbing energy?
The element that has the symbol Fe.
What is iron?
The horizontal rows are called ____________ and the verticla rows are called ______________.
What are periods and groups?
A variant of an element that has the same number of protons but different numbers of neutrons in its nucleus.
What is an isotope?
A type of bond in which positive metal ions are arranged in a lattice, surrounded by a cloud of valence electrons.
What is a metallic bond?
A chemical equation must be balanced because of what scientific law?
What is the law of conservation of matter? Matter is neither created nor destroyed.
Name one property of nonmetals.
What are poor conductors of electricity, brittle solids or gases, dull (not shiny), etc.?