Mid Topic Revision Flash Cards

Question 1

Bunsen burner diagram

Answer 1

A visual representation showing the different parts of a Bunsen burner, such as the air hole, barrel, collar, and gas inlet.

Question 2

Lighting a Bunsen burner

Answer 2

The process of safely lighting a Bunsen burner by first ensuring the air hole is closed, then slowly turning on the gas and using a striker or match to ignite the gas at the top of the barrel.

Question 3

Blue and safety flames

Answer 3

The blue flame is small and very hot, while the safety flame is larger and yellow.

Question 4

Atom components

Answer 4

An atom consists of three components: protons (positively charged), neutrons (neutral charge), and electrons (negatively charged).

Question 5

Atomic number

Answer 5

The number of protons in the nucleus of an atom, which determines the element’s identity in the periodic table.

Question 6

Element

Answer 6

A substance composed of only one type of atom, and its symbol is used to represent it in the periodic table.

Question 7

Metals and non-metals properties

Answer 7

Metals are typically shiny, malleable, good conductors of heat and electricity, while non

Question 8

Periodic table elements

Answer 8

A visual representation of all known elements, where metals are located on the left and center, and non-metals are on the right.

Question 9

Monatomic, molecular, metallic/non-metallic lattices

Answer 9

Elements can exist as single atoms (monatomic), in clusters forming molecules (molecular), or in repeating patterns forming lattices (metallic/non-metallic). For example, noble gases are monatomic, oxygen is molecular, and sodium is metallic.

Question 10

Compound

Answer 10

A substance composed of two or more different types of atoms chemically bonded together, forming a new substance with unique properties.

Question 11

Arrangement of atoms in compounds

Answer 11

Molecular compounds consist of molecules formed by covalent bonds, while compound lattices are made up of ions held together by ionic bonds.

Question 12

Simple chemical formula

Answer 12

A representation of the type and number of atoms in a compound, such as H2O for water.

Question 13

States of matter

Answer 13

The physical forms in which all matter exists: solid, liquid, and gas, based on the arrangement and energy of particles.

Question 14

Particle model

Answer 14

A scientific concept that describes the behavior and properties of particles in different states of matter, including volume, shape, compressibility, flow, and pressure.

Question 15

Density

Answer 15

The measure of mass per unit volume of a substance, often expressed in grams per cubic centimeter (g/cm3).

Question 16

Measuring density of irregular substance

Answer 16

Using the displacement method, where the irregular substance is submerged in a known volume of water, and the change in water level is used to calculate the volume of the irregular substance.