Question

carlos is building models of different materials. he uses red beads for oxygen atoms, white beads for hydrogen atoms, and black beads for carbon atoms. one of his models is made of only black beads. what can carlos conclude about this model? a. it shows a compound made of three types of atoms b. it shows an element made of only carbon atoms c. it is not matter because it uses beads d. it shows a mixture of different atoms

Explanation:

• A compound is made of different types of atoms. Since the model has only black (carbon) beads, it's not a compound.
• An element is a pure substance made of only one type of atom. Here, only carbon atoms (black beads) are present.
• Beads are used as a model. Matter is anything that has mass and takes up space. The model (using beads) represents matter.
• A mixture has different substances (different atoms in this context). But there's only one type of atom (carbon).

Answer:

B. It shows an element made of only carbon atoms