Matter Unit Test

1. Lacey is growing vegetable plants. Lacey thinks that if she uses red light on her tomato plant, then it will grow the tallest. What is the independent variable in Lacey's experiment?

• amount of growth

• color of light

• type of plant

• size of pot

Tags

NGSS.MS-LS1-5

Jack is experimenting at a hill in his neighborhood. He wants to determine which car will go down the hill the fastest. He takes three cars of different weights to the hill in his neighborhood and tests to see which car goes down the hill the fastest. What is the dependent variable in his experiment?

• the number of times he tests each car

• weight of the car

• how many cars he tests

• how fast the cars go down each hill

What is the correct number of atoms for the elements in this compound?: CO₂

• Carbon (C) : 2

  Oxygen (O) : 2

• Carbon (C) : 2

  Oxygen (O) : 1

• Carbon (C) : 1

  Oxygen (O) : 2

• Carbon (C) : 1

  Oxygen (O) : 1

Tags

NGSS.MS-PS1-1

Which subatomic particles make up the nucleus? Select 2.

• protons

• neutrons

• electrons

• electron cloud

Tags

NGSS.MS-PS1-1

When two elements bond together they form a:

• mixture

• compound

• new element

• nucleus

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Which of the following represents a balanced chemical equation?

• 1. 2N₂ + H₄ → NH₄

• 1. Al + CO₂ → 2Al₂O₃

• 1. 2Fe + 2O₂ → FeO₂

• 1. 2Na + Cl₂ → 2NaCl

Tags

NGSS.MS-PS1-5

A substance that can not be broken down chemically or physically is called:

• element

• mixture

• compound

• solution

What are the three major elements in the human body? Select 3 answers.

Oxygen: 65% Carbon: 18% Hydrogen: 10% Nitrogen: 3% Calcium: 2% Others: 2%

• nitrogen

• oxygen

• carbon

• hydrogen

Tags

NGSS.MS-PS1-1

When two or more elements react, they are held together by:

• bonds

• neutrons

• electrons

• protons

Which subatomic particle has a positive charge?

• proton

• neutron

• electron

• nucleus