Question 1

Which of the following best describes how scientists develop explanations in different fields of science?

Accepted Answer

They use methods that include observation, experimentation, and analysis of data

Answer

They rely only on personal opinions and beliefs

Answer

They always use the same exact steps regardless of the field

Answer

They avoid revising explanations even when new evidence is found

Question 2

What is an essential component of a scientific investigation?

Accepted Answer

Collecting relevant empirical evidence and applying logical reasoning

Answer

Making predictions without any supporting data

Answer

Ignoring evidence that does not support the hypothesis

Answer

Ignoring evidence that does not support the hypothesis

Question 3

Which statement best characterizes science and its methods?

Accepted Answer

Science uses systematic observations, evidence, and reasoning to explain natural phenomena

Answer

Science avoids changing explanations even when new evidence appears

Answer

Science is based on opinions and traditions

Answer

Science relies on supernatural explanations for natural events

Question 4

Which of the following is the BEST reason for wearing safety goggles during a lab experiment?

Accepted Answer

To protect your eyes from chemicals, heat, or broken glass

Answer

To look professional in the lab

Answer

To avoid getting fingerprints on equipment

Answer

To help you see better under bright lights

Question 5

What should you do if you accidentally spill a chemical on your skin?

Accepted Answer

Immediately rinse the area with plenty of water and notify the teacher

Answer

Ignore it if it doesn’t burn

Answer

Cover it with a glove and continue the experiment

Answer

Wipe it off with a paper towel and keep working

Question 6

Which of the following is NOT a safe practice in the science lab?

Accepted Answer

Eating or drinking during an experiment

Answer

Tying back long hair before using a Bunsen burner

Answer

Reading all instructions before starting the lab

Answer

Wearing closed-toe shoes in the lab

Question 7

Which statement best explains why elements are arranged in groups on the periodic table?

Accepted Answer

Elements in the same group have similar chemical properties

Answer

Elements in the same group have the same atomic mass

Answer

Elements in the same group have identical densities

Answer

Elements in the same group have the same number of protons

Question 8

What do elements in the same column of the periodic table share?

Accepted Answer

Similar chemical properties

Answer

The same atomic number

Answer

The same physical state at room temperature

Answer

The same number of neutrons

Question 9

A student wants to investigate whether elements in the same group react similarly with water. Which step should they take first?

Accepted Answer

Define the problem and research background information

Answer

Predict the outcome based on personal opinion

Answer

Begin mixing elements with water immediately

Answer

Collect data from previous experiments

Question 10

Why is imagination important in scientific investigations?

Accepted Answer

It helps scientists create hypotheses and models.

Answer

It replaces the need for evidence.

Answer

It guarantees accurate data collection.

Answer

It ensures experiments are error-free.

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