ATOMS, ELEMENTS, MOLECULES AND COMPOUNDS

The center of an atom is called the

• middle

• neutron

• nucleus

• proton

Which two sub-atomic particles are found in the nucleus of an atom?

• protons and electrons

• neutrons and electrons

• protons and neutrons

• there no sub-atomic particles in the nucleus

These sub-atomic particles fly around the nucleus and are negatively charged

• protons

• neutrons

• electrons

• ions

What would you use to look at an object too small to see with just your eyes?

• telescope

• microscope

• telephone

• laparoscope

On the periodic table, what element does the symbol H represent?

• helium

• hydrogen

• hydrolose

• hectum

Two or more atoms connected by a chemical bond

• compound

• molecule

• ion

• proton

Tags

NGSS.MS-PS1-1

Molecules made of two or more elements

• compound

• mixture

• bond

• chemical

Tags

NGSS.MS-PS1-1

Positive charged particles are called

• Proton

• Neutron

• Electron

• Ion

Tags

NGSS.MS-PS2-3

Negative charged particles are called

• Proton

• Neutron

• Electron

• Ion

Tags

NGSS.MS-PS2-3

Subatomic particle that has no charge (neutral)

• Proton

• Neutron

• Electron

• Ion