Chemical Reactions Exam

a process or reaction in which the system absorbs energy from its surroundings; usually, but not always, in the form of heat

• Endothermic Reaction
• Exothermic Reaction
• Diffusion
• Fission

Tags

NGSS.HS-PS1-4

a chemical reaction that releases energy by light or heat

• Endothermic Reaction
• Exothermic Reaction
• Diffusion
• Fission

Tags

NGSS.HS-PS1-4

type of chemical reaction where an element reacts with a compound and takes the place of another element in that compound

• Double Displacement
• Single Displacement
• Synthesis
• Decomposition

type of chemical reaction where two compounds react, and the positive ions (cation) and the negative ions (anion) of the two reactants switch places, forming two new compounds or products

• Double Displacement
• Single Displacement
• Synthesis
• Decomposition

type of reaction in which two or more elements combine to form a more complex compound

• Double Displacement
• Single Displacement
• Synthesis
• Decomposition

type of reaction in which a compound is broken down into its simple elements

• Double Displacement
• Single Displacement
• Synthesis
• Decomposition

Consider the equation S + O₂ → SO₂. What is the product?

• S
• O₂
• SO₂
• S + O₂

In an exothermic reaction, energy may be released to the surroundings in the form of

• heat
• light
• heat and light
• none of the above

Which of the following is a synthesis reaction?

• 2 H₂ + O₂ → 2H₂O
• 2 H₂O → H₂ + O₂
• CaCO₃ → CaO + CO₂
• None of the above

In the chemical formula CH₄, how many atoms of hydrogen (H) are there?

• 2
• 3
• 4
• 6