Chemical Reactions/Equations

Beryllium (Be) has an atomic number of 4 & Magnesium (Mg) has an atomic number of 12. They behave the same in a chemical reaction.How should they be placed on the periodic table?

• They should be placed in the same group with Mg on the top and Be below.

• They should be placed in the same group with Be on the top and Mg below.

• They should be placed in the same period with Mg on the top and Be below.

• They should be placed in the same period with Be on the top and Mg below.

The diagram shows an atom of a neutral element from the periodic table. The atom in the diagram represents which element?

• beryllium

• magnesium

• sodium

• neon

Tags

NGSS.MS-PS1-1

Which list of elements will behave similarly in a chemical reaction? ( hint: think about the PT groups and periods)

• lithium, beryllium, boron

• potassium, magnesium, silicon

• nitrogen, carbon, oxygen

• fluorine, chlorine,bromine

William drew a model of the atom beryllium(Be). In the nucleus he included 4 protons and 4 electrons. Orbiting the nucleus he added 5 neutrons in the shells. What mistake did he make?

• The protons should be circling the nucleus, not the neutrons.

• The neutrons should be in the nucleus with the protons and the electrons should be in the shell.

• The nucleus should have electrons and neutrons, not protons and electrons.

Tags

NGSS.MS-PS1-1

Select all the subatomic particles that make up an atom?

• protons

• ions

• electrons

• negatives

• neutrons

Tags

NGSS.MS-PS1-1

Which statement about an element is true..

• An element can be separated into smaller parts

• An element is made up of only one type of atom

• An element is composed of different types of atoms combined together

• An element is always in a liquid state

What are the vertical columns on the periodic table called?

• groups/families

• periods

What are the horizontal columns on the periodic table called?

• groups/families

• periods

Group 18 is also called

• halogens

• alkaline earth metals

• alkali metals

• noble gases

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

• 20
• 10
• 5
• 25

Tags

NGSS.MS-PS1-1