WorksheetsScience Lesson 21
Total questions: 14
Worksheet time: 7mins
A scientist who studies what all things in the universe that we can observe are made of.
chemist
biologist
zoologist
physicist
Our bodies get the __________ needed to live, grow, and stay healthy from air, water, and food.
elements
clothes
carbohydrates
doctors
Chemists list all the elements on a table called the ______________________________.
periodic table of elements
periodic table of vitamins
periodic table of minerals
periodic table of knowledge
What is the symbol for oxygen?
O
Ox
Oxy
OG
Which element has a symbol of C?
carbon
chlorine
calcium
copper
Which of the following elements is used to inflate balloons?
helium
aluminum
gold
silicon
Which of the following elements is used to make soft-drink cans?
helium
aluminum
gold
silicon
Which of the following elements is used in computer wiring and electrical wires in our homes?
copper
aluminum
silver
silicon
Which of the following elements is used in jewerly?
copper
aluminum
silver
silicon
Which of the following elements is used to make water safe to drink?
copper
chlorine
silver
silicon
Which of the following elements is used to make chips to power computers and cell phones?
copper
chlorine
silver
silicon
Which of the following elements is used to make our bones strong?
copper
calcium
silver
silicon
Which of the following elements is used to prevent cavities?
copper
calcium
fluorine
silicon
The atomic number tells the number of ________ in the nucleus of an atom.
protons
neutrons
electrons
