IC2 LS2 Quiz

True or False

In a chemical reaction, no new atoms are created, and no atoms are destroyed.

• true

• false

The left side of the equation is called the

• Products

• Reactants

The right side of the equation is called the

• products

• reactants

Which statement is not a description of a chemical reaction?

• A solid is dropped into a beaker of liquid and a gas is released.
• Two liquids are mixed in a beaker and a solid forms at the bottom of the beaker.
• A solid is dropped into a beaker of liquid and an explosion occurs.
• A liquid is heated in the sun and half of it evaporates.

Tags

NGSS.MS-PS1-2

In a chemical reaction

• The atoms of the reactants always stay together to form the products
• The atoms of the reactants unbond, rearrange, and then rebond to form the products
• New atoms are formed which combine to make the products
• Some atoms disappear while others multiply to form the products

Tags

NGSS.MS-PS1-5

Which of the following answers will balance the equation below?
__K + __Br₂ --> __KBr

• 2, 1, 1
• 2, 3, 2
• 2, 1, 2
• 1, 2, 3

Tags

NGSS.MS-PS1-5

Which of the following represents a chemical change?

• cutting a piece of paper with scissors

• placing water in the freezer to make ice

• burning a piece of notebook paper in the presence of oxygen

• heating water over a flame to its boiling point

Which of the following is an example of a chemical change?

• rusting of a bicycle
• painting a house
• washing a dog
• tearing up a newspaper

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is an example of a physical change?

• wood burning
• ice melting
• food digesting
• iron rusting

Tags

NGSS.MS-PS1-4

How do chemical reactions turn substances into new substances?

• with burning acid
• the molecules mix together and create new substances
• the atoms break apart and combine back together in new ways
• the ionic compounds mix in water to form solutions

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5