Stage 1 & 2

What is the ability of a body to do work?

It is the property to the wave related to the distance between 2 adjacent ridges (or valleys)

What is the number of protons in the following isotopic notation?

Obtaining table salt involves to subject seawater to sunlight to evaporate water and separate the salt.

It is known as the angular or secondary quantum number.

Choose the transition where energy is absorbed (endothermic)

Bronze, steel & brass are homogeneous mixtures.

He performed the model known as “Solid sphere”

State of matter which has a defined shape and volume.

It is possible to fit up to 10 electrons in sublevel “d”.

What is the lightest particle in the atom?

He established the first atomic theory.

He concluded the atom has a nucleus and mostly empty space through gold foil experiment.

Sublimation is the transition from solid to gas.

Matter cannot be created nor destroyed just transformed.

J. J. Thomson discovered the proton.

John checks the number of red cells in a blood sample. Which step of scientific method is used in this procedure?

Theory that seeks to explain the nature of light & takes electromagnetic waves as a reference.

This law states that elements combine to form compounds and they always do so in the same amount.

Substances formed by the chemical combination of 2 or more elements

Method used to separate components in blood samples.

What is the procedure used by Chemistry to study nature?

According to the electromagnetic spectrum which radiation has the largest wavelenght?

Identify the element using the following electron configuration:

It postulates: it is impossible to simultaneously know know the speed & position of an electron

In the visible spectrum VIOLET has the highest energy and shortest wavelenght.

The fabric used in textile industry has empty spaces on its surface. What general property is referred to?

Choose the option containing ONLY examples mixtures.

The current model (1926) is the planetary model.

Region of the space around the nucleus where it is very likely to find an electron in the atom

Match according to abundant elements:

They are known as quantum numbers.

This model representation was developed by:

Atomic number of Uranium is 92 and its atomic mass is 238. Indicate the number of protons and neutrons.

“n” is known as the main quantum number.

It is the subatomic particle no electrically charged located in the nucleus.