Summative 1 Review

What are the three major parts of an element in the periodic table that we care about?

• Name, Symbol, Atomic Mass

• Name, Symbol, Atomic Number

• Symbol, Atomic Mass, Atomic Number

• Name, Atomic Mass, Atomic Number

Which subatomic particle carries a positive charge and is located in the nucleus?

• Electron

• Neutron

• Proton

• Photon

What determines the chemical properties of an atom?

• Protons

• Neutrons

• Electrons

• Atomic Mass

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What is the role of valence electrons in an element?

• They determine the atomic mass.

• They determine the number of protons.

• They determine the number of bonds an element can form.

• They determine the element's position in the periodic table.

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What happens to energy and mass during chemical reactions?

• They are destroyed.

• They are created.

• They are conserved.

• They are converted into protons.

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What type of bond involves atoms sharing electrons unevenly?

• Ionic Bond

• Covalent Bond

• Polar Covalent Bond

• Metallic Bond

What type of bond is the weakest but still very strong, and involves atoms completely donating electrons?

• Covalent bond

• Ionic bond

• Hydrogen bond

• Metallic bond

Which type of reaction absorbs energy, resulting in products having more energy than the reactants?

• Exothermic reaction

• Endothermic reaction

• Combustion reaction

• Decomposition reaction

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What is the result of a hydrolysis reaction?

• Formation of a single molecule

• Production of water as a reactant

• Breaking down of a molecule into two and energy release

• Removal of water from two molecules

Why does water have a high surface tension?

• Because it forms covalent bonds

• Because it forms strong hydrogen bonds along the surface

• Because it is non-polar

• Because it is a gas at room temperature