Science STAAR Category

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

• The neutrons are inside the nucleus and have a positive charge.

• The neutrons are outside the nucleus and have a neutral charge.

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

• The neutrons are inside the nucleus and have a neutral charge.

Which statement best describes an electron?

• Smaller mass than a proton and a negative charge

• Smaller mass than a proton and a positive charge

• Greater mass than a proton and a negative charge

• Greater mass than a proton and a positive charge

Tags

NGSS.MS-PS2-3

Four students were asked to complete a table for a science assignment. Each student selected one chemical element from each of four groups in the periodic table and then classified each element as a metal, nonmetal or metalloid. Which table was completed correctly?

• A

• B

• C

• D

Students were asked to identify the location of elements in the periodic table based on clues printed on game cards. Based on the data, which periodic table shows the correct location of the four elements?

*the answer choices (F, G, H & J) are the same in the question image and the answer choice images...trying to make it so you can zoom in to see the answers!

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Tags

NGSS.MS-PS1-1

Which pair of properties describes the elements in Group 18?

• they are chemically stable and liquid at room temperature

• they have eight valence electrons and are flammable

• they are magnetic and boil at low temperatures

• they are gaseous at room temperature and chemically stable

Element R and Element Q have the same number of valence electrons. These elements both have similar chemical behavior, but Element R has fewer energy levels than Element Q. Which statement best describes the positions of the two elements in the periodic table?

• the two elements are in the same period, with element R the first element in the period and element Q the last element

• the two elements are side by side in the same period, with element Q to the left or element R

• the two elements are in the same group, with element R just above element Q

• the two elements are in the same group, with element Q at the top of the group and element R at the bottom

Tags

NGSS.MS-PS1-1

You know you a chemical reaction has occurred if 

• there is a precipitate.

• there is a color change.

• there is a temperature change.

• All of these answers are evidence.

Tags

NGSS.MS-PS1-2

Does this chemical equation follow the Law of Conservation of Mass?

• Yes

• No

• I don't know

• Maybe

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In this image, the information to the RIGHT of the arrow (in BLACK) is called the_______.

• Product

• Reactant

• Chemical Subscript

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Read the following chemical formula: C₆H₁₂O₆. How many hydrogen atoms are in the formula?

• 12

• 6

• 4

Tags

NGSS.MS-PS1-1