Answer:
Crystal-Salt and sugar
Not crystal-pepper
Explanation:
Sodium (Na) is represented by the smaller grey atoms, whereas chlorine (Cl) is represented by the bigger green atoms (Cl). The ionic compound salt is made up of sodium and chloride atoms (NaCl). When several of these molecules come together to create a crystal, they tend to form a cubic pattern. The salt crystals are also cubic as a result of this.
