Physical Properties of Matter

What is the formula to calculate the number of neutrons in an atom?

Number of neutrons = Mass number (A) - Atomic number (Z)

What is the definition of isotopes?

Atoms that have the same atomic number but different mass numbers

What is the charge of an anion?

Negative

What holds ions together in an ionic bond?

Electrostatic forces Signup and view all the answers

What is the name of the ion that is a neutral atom that loses electrons and has a positive charge?

Cation Signup and view all the answers

What is the main characteristic of a heterogeneous mixture?

It has visibly distinguishable parts Signup and view all the answers

What is an example of a physical property of matter?

Melting point of a substance Signup and view all the answers

What is the term for a change in which a substance changes its physical appearance but not its composition?

Physical change Signup and view all the answers

What is an example of a chemical change?

Burning of paper Signup and view all the answers

Which of the following properties of matter depends on the size or amount of the sample?

Amount Signup and view all the answers

What is the term for a mixture that is uniform throughout?

Homogeneous mixture Signup and view all the answers

What is the result of a chemical reaction?

A change in chemical composition Signup and view all the answers

What is the purpose of the arrow in a chemical equation?

To indicate the direction of converting reactants to products Signup and view all the answers

How are the physical states of substances represented in a chemical equation?

Within subscript parentheses Signup and view all the answers

What is the correct order of balancing a chemical equation?

Balance other elements, then H, then O Signup and view all the answers

What is the characteristic taste of acids?

Sour Signup and view all the answers

What is the correct balanced equation for the reaction of hydrogen gas with oxygen gas?

2H2 (g) + O2 (g) 2H2O (l) Signup and view all the answers

What is the purpose of applying a solution of FeCl3 to a bleeding wound?

To stop bleeding and promote clotting Signup and view all the answers

Why does the sky appear blue?

Due to the scattering of blue light by colloidal dust particles Signup and view all the answers

What is a characteristic of gases?

They are highly compressible and mix completely when confined Signup and view all the answers

What is the unit of pressure in the SI system?

Pascal Signup and view all the answers

What is the function of a barometer?

To measure the pressure of the atmosphere Signup and view all the answers

What is the result of settling mud particles in a mixture of water and mud?

The water can be filtered and used Signup and view all the answers

What is the pressure of a column of mercury exactly 760 mm high at 0°C at sea level?

101.325 kPa Signup and view all the answers

What are the four variables that define the physical properties of any gas?

Pressure, temperature, volume, and number of moles Signup and view all the answers

What is the relationship between the pressure and volume of a fixed amount of gas at a constant temperature, according to Boyle's Law?

Pressure is inversely proportional to volume Signup and view all the answers

What is the relationship between the volume of a fixed amount of gas and its absolute temperature, according to Charles's Law?

Volume is directly proportional to temperature Signup and view all the answers

What is the purpose of the equation T(Kelvin) = 273 + T(Celsius)?

To convert Celsius to Kelvin Signup and view all the answers

What is the relationship between the volume of a gas and the number of moles of the gas, according to Avogadro's Law?

Volume is directly proportional to the number of moles Signup and view all the answers