Q1BM

This chemical equation models a change in matter that produces a new substance.

This is called a ______________________.

• chemical change

• chemical property

• physical propert

• physical change

Tags

NGSS.MS-PS1-2

What does number 1 represent in this atom of oxygen?

• proton

• nucleus

• electron

• neutron

Tags

NGSS.MS-PS1-1

What type of changed is represented by a chemical equation?

• physical change

• chemical change

• matter change

• bonding change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of these is an ELEMENT?

• C02

• Na2NCl

• He

• CaCl

Which of these is a compound?

• O

• Ca

• Cl

• CO2

Tags

NGSS.MS-PS1-1

Electrons have what type of charge?

• Postive

• Negative

• Neutral

• polar

Tags

NGSS.MS-PS2-3

How is a COMPOUND represented?

• formula

• equation

• symbol

• reaction

Tags

NGSS.MS-PS1-1

If students study 25 minutes per night, then they will receive higher scores on their tests.

What is the dependent variable?

• How many students

• Whether or not the student studies

• What subject is being studied

• how high the test scores are

How are each of the elements different?

• Some are compounds, some are elements

• Their atomic numbers are the same, but their atomic masses are different

• They are all elements, but they have different numbers of protons and electrons

Tags

NGSS.MS-PS1-1

This table shows the major elements present in the Earth's atmosphere.

Which element is represented by the letter W?

• nitrogen

• oxygen

• carbon dioxide

• argon