Reporting Category One Science

Which statement correctly describes the location and charge of the electrons in an atom?

• The electrons are inside the nucleus and have no charge.

• The electrons are outside the nucleus and have no charge.

• The electrons are inside the nucleus and have a negative charge.

• The electrons are outside the nucleus and have a negative charge.

What type of particles are found in the cloud surrounding the atom's nucleus?

• Positively charges particles and negatively charges particles

• Negatively charged particles only

• Neutral particles and positively charges particles

• Positively charges particles only

Tags

NGSS.MS-PS1-1

Which of the following best describes an electron?

• It has no charge and about the same mass as a proton.

• It has a negative charge and much less mass than a proton.

• It has a positive charge and much more mass than a neutron.

• It has a negative charge and about the same mass as a neutron.

An atom has 25 protons, 30 neutrons, and 25 electrons. What is the charge of the atom's nucleus?

• +25

• +30

• -25

• -30

Why do you need to report your results to the scientific community?

• You don't need to ever report anything. Just keep all of your findings to yourself.

• You should report your results so others can replicate your experiment and fact check it; for validity.

• Everybody is in your business anyways, so you might as well share it with them before you hear a different version from someone else.

• You report your results to get famous.

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-1

Park rangers count the number of rattlesnakes observed along a specific trail at different times during the year. They use this information to let campers know when it is safer to go off path.

• Descriptive

  Investigation

• Comparative

  Investigation

• Experimental

  Investigation

Scientific questions have to be...

• Measurable/Investigated

• Easy

• Interesting

• Short

Tags

NGSS.MS-LS1-1

NGSS.MS-PS1-2

NGSS.MS-PS2-2

A student drew atomic models of four element.
Based on these drawings, which element is the least reactive?

• Neon, because it has two energy levels with eight electrons in the second level

• Chlorine, because is has three energy levels with seven electrons in the third level

• Gallium, because it has four energy levels with three electrons in the fourth level

• Tin, because it has five energy levels with four electrons in the fifth level

Tags

NGSS.MS-PS1-1

A chemist made the table below to record some atomic properties of four elements.
Based on the information in the table, which conclusion about the chemical reactivity of these elements is valid?

• Boron is the most reactive because it has the most protons.

• Fluorine is the most reactive because it has 7 electrons in the outer shell.

• Silicon is the most reactive because it has an equal number of protons and neutrons.

• Gallium is the most reactive because it has many more neutrons than protons.

Tags

NGSS.MS-PS1-1

Four students were asked to name the parts of an atom that determine the atom's identity and chemical properties. The students' responses are shown in the table below.
Which student's responses are correct?

• Student 1

• Student 2

• Student 3

• Student 4

Tags

NGSS.MS-PS1-1