atoms & elements u6 l3

What is an element?

• A substance made from two or more simpler substances.
• The basic unit of matter.
• A substance that is a good conductor of heat and electricity.
• A substance that cannot be broken down into simpler materials by ordinary means

What do protons and electrons have that neutrons do not?

• mass
• charge
• weight
• volume

What elements are the most abundant in Earth’s atmosphere?

• water and air
• nitrogen and oxygen
• silicon and aluminum
• carbon dioxide and oxygen

How is the element carbon different from the element nitrogen?

• Carbon has a negative charge. 
• Nitrogen has a negative charge.
• They have different numbers of protons.
• Carbon can be broken down into simpler substances.

Metals all share certain physical properties. Which property do most metals share?

• brittle
• malleable
• poor conductor of heat and electricity
• low boiling point

The _______ is the particle in the nucleus of the atom that carries a positive charge and is counted to identify the atomic number.

• proton
• neutron
• electron
• compound

The particles in the atom that account for most of the mass of the atom are protons and ________j

• neutrons
• electrons
• compounds
• metals

Elements that are shiny, malleable, good conductors of heat and electricity, and make up most of the periodic table are ______

• neutrons
• protons
• compounds
• metals

What is a compound?

• a mixture of chemicals and elements
• a combination of two or more elements
• anything that has mass and occupies space
• the building blocks of matter

What does an atom consist of?

• electrons, protons and alpha particles
• neutrons and protons
• electrons, protons and neutrons
• elements, protons, and electrons