Elements Basics

The nucleus of an atom is made of ________ and ________ .

• protons + neutrons

• electrons + protons

Tags

NGSS.MS-PS1-1

Electrons have a ________ charge.

• positive +

• negative -

• no

Tags

NGSS.MS-PS1-1

Protons have a ________ charge.

• positive +

• negative -

• no

Tags

NGSS.MS-PS1-1

Neutrons have ___________ charge.

• positive +

• negative -

• no

What is the Periodic Table?

• a chart that lists all the molecules that exist in the universe

• a chart that shows all the elements scientists have discovered

• a chart that shows all the compounds found in the world

• a chart that shows what time periods elements were discovered in

Tags

NGSS.MS-PS1-1

An element is a pure substance made up of only one type of atom

• True

• False

What is the periodic table primarily used for?

• Calculating molecular weights

• Organizing chemical elements based on their properties

• Measuring the temperature at which elements melt

• Determining the solubility of substances

Which element is located in Group 1 and Period 2 of the periodic table?

• Helium

• Lithium

• Neon

• Sodium

What do elements in the same group of the periodic table have in common?

• Same number of protons

• Similar chemical properties

• Same atomic mass

• Same number of neutrons

How many periods are there in the periodic table?

• 7

• 10

• 12

• 5