What’s on the Chemical Reactions poster
A definition and 5 facts worth remembering.
In a chemical reaction, atoms are rearranged into new substances. No atoms are created or destroyed.
- Signs: colour change, gas produced, temperature change, precipitate, light.
- Reactants are on the left of the arrow; products on the right.
- Mass is conserved — the same atoms appear on both sides.
- That is why equations must be balanced.
- Exothermic reactions release heat; endothermic ones absorb it.
- Iron + oxygen → rust. The iron has not vanished; it has become something else.
Balancing means changing the big numbers in front, never the small ones inside a formula.
Questions about the Chemical Reactions poster
- What’s on the Chemical Reactions poster?
- A definition and 5 facts worth remembering. In a chemical reaction, atoms are rearranged into new substances. No atoms are created or destroyed. Signs: colour change, gas produced, temperature change, precipitate, light.; Reactants are on the left of the arrow; products on the right.; Mass is conserved — the same atoms appear on both sides.; That is why equations must be balanced.; Exothermic reactions release heat; endothermic ones absorb it.; Iron + oxygen → rust. The iron has not vanished; it has become something else.. Balancing means changing the big numbers in front, never the small ones inside a formula.
- Who is the Chemical Reactions poster for?
- Chemical Reactions is filed under 7th Grade (ages 12–13), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting science, and to the parent or teacher answering the question at the kitchen table.
- When should you use the Chemical Reactions poster?
- Look for the five signs. If none is present, it was probably a physical change. A wall chart earns its place by being glanceable from where the work is happening, so Chemical Reactions belongs on the wall where that science work actually happens, within glancing distance, rather than filed away.
- What other posters go with Chemical Reactions?
- Atoms, Elements, Compounds and Mixtures and How Body Systems Work Together sit alongside Chemical Reactions in the 7th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.AtomsElements, Compounds and MixturesHow Body Systems Work Together
- Is the Chemical Reactions poster free to download and print?
- Yes. Chemical Reactions downloads as a free PDF with no account, no email and no watermark, like everything else in the 7th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Chemical Reactions poster print at?
- Chemical Reactions is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Chemical Reactions loses nothing.Printing guide
Related posters
Charts that sit alongside Chemical Reactions on the same wall.
Browse every 7th Grade poster, or start from the full catalogue.