Elements (Basics)
Smallest unit of matter is called an _______.
Answer: What is an atom?
This element is in Group 1, Period 3.
Answer: What is sodium (Na)?
Elements on the left side of the periodic table are mostly ______.
Answer: What are metals?
The symbol Na comes from the Latin word natrium. What is the element?
Answer: What is sodium?
This element is essential for breathing.
Answer: What is oxygen?
The center of the atom is called the ______.
Answer: What is the nucleus?
This element is in Group 17, Period 2.
Answer: What is fluorine (F)?
Elements that are poor conductors of heat and electricity are called ______.
Answer: What are nonmetals?
The symbol K comes from the Latin word kalium. What is the element?
Answer: What is potassium?
This element makes up most of the air we breathe.
Answer: What is nitrogen?
The particles that have a positive charge are called ______.
Answer: What are protons?
This element is in Group 2, Period 4.
Answer: What is calcium (Ca)?
Elements that have properties of both metals and nonmetals are called ______.
Answer: What are metalloids?
The symbol Fe comes from the Latin word ferrum. What is the element?
Answer: What is iron?
This metal is liquid at room temperature.
Answer: What is mercury (Hg)?
Electrons are found in ______ around the nucleus.
Answer: What are shells/energy levels?
This element is in Group 18, Period 1.
Answer: What is helium (He)?
Give one example of a metalloid.
Answer: What is boron, silicon, arsenic, tellurium, etc.?
The symbol Pb comes from the Latin word plumbum. What is the element?
Answer: What is lead?
This gas is used in balloons because it is lighter than air.
Answer: What is helium?
The number of protons in an atom is called the ______ number.
Answer: What is the atomic number?
This element is in Group 16, Period 3.
Answer: What is sulfur (S)?
The “stair-step” line on the periodic table separates which two types of elements?
Answer: What are metals and nonmetals?
The symbol Au comes from the Latin word aurum. What is the element?
Answer: What is gold?
This element is the main component of table salt along with sodium.
Answer: What is chlorine (Cl)?