input: OPTIONS:
- constant
- similar
- negative
- positive Now, answer this question: Answer the following question given this paragraph: An acid also produces negative ions, and a base also produces positive ions. For example, the acid hydrogen chloride (HCl), when dissolved in water, produces negative chloride ions (Cl - ) as well as hydrogen ions. The base sodium hydroxide (NaOH) produces positive sodium ions (Na + ) in addition to hydroxide ions. These other ions also combine when the acid and base react. They form sodium chloride (NaCl). This is represented by the equation:. Q: When dissolved in water, the base sodium hydroxide (naoh) produces sodium ions with what charge? A:
A:
output: positive

Answer the following question given this paragraph: Speed is an important aspect of motion. It is a measure of how fast or slow something moves. It depends on how far something travels and how long it takes to travel that far. Speed can be calculated using this general formula:. Q: What is the measure for how fast or slow something moves? A:

OPTIONS:
- momentum
- kinetic energy
- inertia
- speed

Answer: speed

Problem: OPTIONS:
- reactions
- organisms
- Proteins
- isotopes
Q: Answer the following question given this paragraph: The mass spectrometer measures the percent abundance of different isotopes in a given sample. Q: He mass spectrometer measures the percent abundance of different what? A:
Answer: isotopes

Problem:OPTIONS:
- petrology
- biology
- geology
- chemistry

Answer the following question given this paragraph: Chemistry is the study of the structure, properties, and interactions of matter. Important concepts in chemistry include physical changes, such as water freezing, and chemical reactions, such as fireworks exploding. Chemistry concepts can answer all the questions on the left page of the notebook in Figure below . Do you know the answers?. Q: What is the study of structure, properties, and interactions of matter? A:
****
A: chemistry

Answer the following question given this paragraph: Some fireplaces use propane gas rather than wood as fuel. Q: Instead of wood, what do some fireplaces use? A:
OPTIONS:
- kerosene
- gasoline
- acetylene
- propane
propane

Answer the following question given this paragraph: Seawalls and breakwaters are built parallel to the shore. Q: Seawalls and breakwaters are built parallel to what? A:
OPTIONS:
- center-point
- ocean base
- the deep
- shore

Answer:
shore