Pass Science Review

Josey is conducting a lab investigating the effects of acid rain. While reading the lab instructions, she notices the safety symbol shown above. What is the meaning of this safety symbol?

• Wear safety gloves while performing this experiment.

• Caution: Chemicals in this lab are corrosive.

• Wash your hands after handling the chemicals in this lab.

• Caution: Chemicals in the experiment will be very hot.

Tags

NGSS.MS-PS1-2

This is the periodic entry for the element Boron. What is the atomic mass of Boron?

• 5

• 10.81

• 13

• 15.81

Which of these parts of an atom has a negative charge?

• electron

• proton

• neutron

• nucleus

Which part of the atom has a positive charge?

• electron

• proton

• neutron

• nucleus

Which of the following best defines science?

• A collection of unchangeable facts about the natural world

• The study of the natural world through observation, identification, description, experimental investigation, and theoretical explanations

• A belief system based on assumptions about the natural world

• A method for proving theories beyond doubt

Tags

DOK Level 1: Recall

What is the role of evidence in modifying scientific theories?

• Evidence is rarely considered when modifying theories.

• Evidence can refute or support theories, leading to modifications.

• Theories are modified first, then evidence is found to support the changes.

• Evidence is only used to confirm existing theories, not modify them.

Tags

DOK Level 3: Strategic Thinking

What is a common method for scientists to communicate their research findings?

• Through artistic performances

• By publishing in scientific journals

• By creating infomercials

• Through political debates

Tags

DOK Level 1: Recall

Where are electrons found in an atom?

• inside protons

• in the nucleus

• orbiting the nucleus

• covering the surface of protons

The Law of Conservation of Mass states-

• That in order to conserve mass we should always recycle our waste.

• That conservation efforts are the only way to preserve the mass that exists in natural habitats.

• That the mass in chemical reactions can not be created nor destroyed, just rearranged.

• That you should use only the minimum amount of chemicals necessary in a chemical reaction in order to conserve your supply of that chemical.

Tags

NGSS.MS-PS1-5

A student drops a beaker on the floor, breaking it. Which of the following should the student do FIRST?

• Tell the teacher about the accident.

• Find a new beaker to use.

• Look for a broom and dustpan.

• Have your lab partner clean it up for you.