Unit 2 Exam

Which subatomic particles are found in the nucleus of an atom?

• protons & electrons
• electrons & neutrons
• protons & neutrons
• electrons only

Tags

NGSS.HS-PS1-8

Which subatomic particle has a positive charge and is found in the nucleus of an atom?

• proton
• neutron
• electron

The atomic mass is eaqual to the number of _________ + _________?

• protons + neutrons
• electrons + neutrons
• electrons + protons

Which subatomic particle has a negative charge and orbits in rings surrounding the nucleus?

• protons
• neutrons
• electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What type of bond is formed when electrons are shared?

• ionic bond
• hydrogen bond
• covalent bond
• electron bond

Tags

NGSS.HS-PS1-1

True or False: In a chemical reaction, matter is not created or destroyed?

• True
• False

Tags

NGSS.HS-PS1-7

Water contains

• 1 hydrogen and 2 oxygen
• 2 hydrogen and 1 oxygen
• 2 hydrogen and 2 oxygen
• 1 hydrogen and 1 oxygen

Tags

NGSS.MS-PS1-1

Which of the following is a substance that lowers the activation energy?

• ion
• reactant
• enzyme
• substrate

Which statement is true of chemical equations?

• Reactants are on the right.
• Products have fewer atoms than reactants.
• Products are on the right.
• Reactants have fewer atoms than products.

Tags

NGSS.HS-PS1-7

What are the products in this reaction: 6CO2 + 6H2O → C6H12O6 + 6O2.

• C6H12O6 + 6O2.
• 6CO2
• 6H2O
• C6H12O6
• 6O2.

Tags

NGSS.HS-LS2-5

NGSS.HS-LS1-5