Atomic Structure
Periodic Trends
Chemical Bonding
Chemical Reactions
100

What is the smallest unit of an element that retains its chemical properties?

What is an atom?

100

What is the name for the periodic table's horizontal rows?

What are periods?

100

What type of bond involves the sharing of electrons between atoms?

What is a covalent bond?

100

What is the name for a reaction where two or more substances combine to form a single product?

What is a synthesis reaction?

200

What is the positively charged particle found in the nucleus of an atom?

What is a proton

200

What is the name for the periodic table's vertical columns?

What are groups?

200

What type of bond results from the transfer of electrons between atoms?

 What is an ionic bond?

200

What is the name for a reaction where a single compound breaks down into two or more simpler substances?

What is a decomposition reaction?

300

What region of an atom contains electrons?

What is the electron cloud or orbital?

300

As you move across a period from left to right, what happens to atomic size?

What is a decrease

300

What is the name for the attraction between oppositely charged ions?

What is an ionic bond?

300

What is the name for a reaction where one element or ion replaces another in a compound?

What is a displacement reaction

400

What is the number of protons in the nucleus of an atom called?

What is the atomic number?

400

As you move down a group, what happens to the ionization energy?

What is a decrease?

400

What type of bond is found in metals, where electrons are delocalized?

What is a metallic bond?

400

What is the name for a reaction where electrons are transferred between substances?

What is a redox reaction?

500

What is the total number of protons and neutrons in an atom's nucleus?

What is the mass number

500

What group of elements is known for their low reactivity?

What are the noble gases?

500

What is the name for a chemical compound that results from ionic or covalent bonds?

What is a molecule?

500

What is the term for the minimum amount of energy needed to start a chemical reaction?

What is the activation energy?

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