Physics and Chemistry Concepts Quiz

The primary factors include speed, reaction time, road conditions, and vehicle mass.

Distance can be expressed as $d = v \times t$, where $d$ is distance, $v$ is velocity, and $t$ is time.

Newton's First Law states that an object will remain at rest or in uniform motion unless acted upon by an external force.

<p>The slope of a velocity-time graph represents the object's acceleration.</p> Signup and view all the answers

<p>Aristotle believed that motion required a force, while Galileo established that objects in free fall accelerate uniformly regardless of their mass.</p> Signup and view all the answers

<p>Ionic compounds consist of metal and non-metal ions held together by ionic bonds, while molecular compounds are formed by non-metals sharing electrons through covalent bonding.</p> Signup and view all the answers

<p>A chemical reaction involves the formation of new substances through bond breaking and forming, while a physical change does not alter the chemical structure of a substance.</p> Signup and view all the answers

<p>Valence electrons determine an atom's ability to bond with other atoms, influencing its reactivity and the types of bonds it can form, either ionic or covalent.</p> Signup and view all the answers

<p>An acid-base indicator changes color in response to different pH levels, used to determine the acidity or basicity of a solution.</p> Signup and view all the answers

<p>A decomposition reaction occurs when a single compound breaks down into two or more products; for example, the breakdown of water into hydrogen and oxygen gas, 2H2O → 2H2 + O2.</p> Signup and view all the answers

<p>The periodic table provides the necessary information about element valencies and their common ions, which is crucial for correct formula writing.</p> Signup and view all the answers

<p>Acid-base indicators are used to visually signify the pH level of a solution, helping to determine whether it is acidic, neutral, or basic.</p> Signup and view all the answers

<p>The balanced equation is NaOH + HCl → NaCl + H2O, showing one mole of each reactant produces one mole of table salt and one mole of water.</p> Signup and view all the answers

<p>The main types are synthesis (e.g., A + B → AB), decomposition (e.g., AB → A + B), and single replacement (e.g., A + BC → AC + B).</p> Signup and view all the answers

<p>A neutralization reaction occurs between an acid and a base to form water and a salt, represented as HA + BOH → BA + H2O.</p> Signup and view all the answers