Basic Chemistry recap general

What is matter?

• Anything that reflects light

• Anything that has mass and takes up space

• A combination of elements

• A type of chemical reaction

Choose the the following that best describe matter?

• Matter has not mass

• Anything that take up space

• It has mass and take up space

• None of the above

How is matter classified?

• Into solids and liquids

• Into gases and plasma

• Into pure substances and mixtures

• Into atoms and ions

Which of the following is NOT a state of matter?

• Solid

• Liquid

• Energy

• Gas

What change occurs when a solid turns directly into a gas?

• Condensation

• Sublimation

• Freezing

• Evaporation

What is smallest unit of matter?

Which subatomic particle has a negative charge?

• Proton

• Neutron

• Electron

• Nucleus

What is the central part of an atom called?

• Electron cloud

• Nucleus

• Proton

• Neutron

What is an element?

• A pure substance made up of only one type of atom

• A substance made up of different molecules

• A mixture of two or more substances

• A combination of atoms and ions

Give an analogy of relationship between atoms and element.