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Science DBA Review

Authored by Ricky Kindley

Science

7th Grade

NGSS covered

Used 26+ times

Science DBA Review
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20 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

A student is using colored beads to make a model of aluminum sulfate, Al2(SO4)3. Aluminum atoms are represented by blue beads, sulfur atoms by yellow beads, and oxygen atoms by green beads.

What combination of beads should the student use for the model?

2 blue, 3 yellow, and 12 green

6 blue, 3 yellow, and 7 green

2 blue, 1 yellow, and 4 green

6 blue, 12 yellow, and 12 green

Tags

NGSS.MS-PS1-1

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

The data table provided contains information about how temperature affects the state of matter for three substances. 

 

the atoms in matter change shape when heated.

temperature chemically changes matter. 

the atoms in matter slow when heated.

temperature physically changes matter.

Tags

NGSS.MS-PS1-4

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

  1. How many atoms of oxygen are in the chemical formula below?  


C6H12O6


12

18

6

24

Tags

NGSS.MS-PS1-1

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is a chemical formula?

a mathematical formula that is used to describe a substance

an equation to determine the types of atoms in a substance.

an idea that has a lot of evidence that many scientist have gathered over a long time.

letters and numbers showing the types and numbers of atoms that repeat to make up a substance

Tags

NGSS.MS-PS1-5

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

  1. The names and chemical formulas for four substances are shown in the chart. 

  1. Which substance listed in the chart is made up of the most atoms?


  1. Carbonic acid

  1. Nitric acid

  1. Phosphoric acid

Sulfuric acid

Tags

NGSS.MS-PS1-1

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

  1. A student mixes sugar, water, and lemon juice. Which of the following best describes the changes that occur?

  1. It is a chemical change because sugar, water, and lemon juice are chemicals.

  1. It is a physical change because no new substance is formed. It is still lemon juice, sugar, and water.

  1. It is a chemical change because things are mixed together.

  1. It is a physical change because sugar, water, and lemon juice are all individual things.

Tags

NGSS.MS-PS1-2

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Which of the following is NOT a way humans positively impact surface water?

After humans use water, it flows to a surface water holding area to either be treated for reuse or cleaned before reaching a lake, pond, or river.

Farmers create buffers of plants and trees to filter water before it enters surface water.

Builders use permeable concrete that will reduce runoff to surface water.

Gardeners sweep grass clippings from mowed lawns into the sewer drain.

Tags

NGSS.MS-LS2-5

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