MATTER & ATOMIC STRUCTURE

What is a subatomic particle without an electric charge, located in the nucleus of an atom?

• neutron

• proton

• electron

• valence electron

What is a subatomic particle with a negative charge? It is found in the electron cloud surrounding the nucleus.

• neutron

• proton

• electron

• electron cloud

What is the center of an atom containing protons and neutrons?

• nucleus

• neutron

• proton

• electron cloud

Which subatomic particles are found in the nucleus of an atom?

• Protons and Electrons
• Protons and Neutrons
• Neutrons and Electrons
• Protons, Neutrons and Electrons

How many protons does sulfur have?

• 32

• 16

• 48

• 12

How many electrons does sulfur have

• 16

• 32

• 48

• 12

Which of the following substance exist as a molecular element?

• Helium

• Water

• Zinc

• Chlorine

Which of the following exist as atom?

• Bromine

• Oxygen

• Nitrogen

• Argon

Which of the following statement is true? You may choose more than one answer.

• When temperature increases, particles move slower because they expand

• When temperature is constant, heavier particles will move slower

• When temperature decreases, kinetic energy of particles also decreases

• When temperature is constant, all particles stop moving

table beside shows the boiling and melting point of substances W, X, Y and Z. which of the following is a liquid at 100 degree celsius?

• W

• X

• Y

• Z