Q: What is the measure of how closely molecules are packed together? A:
OPTIONS:
- length
- volume
- frequency
- density

Answer: density

Question: Q: What encloses the border of animal cells? A:
OPTIONS:
- Jacket membrane
- dust membrane
- cells membrane
- plasma membrane
Answer: plasma membrane

input with options: Q: Intrusive igneous rocks cool from magma slowly in the crust and have large what? A:
OPTIONS:
- pores
- atoms
- coal deposits
- crystals
output: crystals

Q: Q: Because alkali metals are so reactive, they are found in nature only in ________ with other elements? A:

OPTIONS:
- isolation
- cooperation
- competition
- combination

A: combination

input: OPTIONS:
- a molecule
- a nucleus
- an isotope
- an atom Now, answer this question: Q: The simplest and smallest particle of matter that still has chemical properties of the element is called? A:
A:
output: an atom

Question: Q: The basal forebrain contains what that are important in learning and memory? A:
OPTIONS:
- oxygen
- ribosomes
- atoms
- nuclei
Answer:
nuclei