Chemical Bonds, Chemical Formulas, and the Periodic Table

Dissolving salt is a

• Chemical change

• Physical change

The glow stick reaction is a

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The production of carbon dioxide gas when baking soda and vinegar reacted indicated a _____________.

• Chemical change

• Physical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Sodium bicarbonate is a __________________.

• Reactant

• Product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the reaction above water is a ________________.

• Reactant

• Product

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The arrow in a chemical equation means _______________.

• Equals

• Yields

Tags

NGSS.MS-PS1-5

A reaction that gives off heat

• Exothermic

• Endothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

A reaction where more energy is released when the bonds of the products are formed than it takes to break the bonds of the reactants. Example: An explosion

• Exothermic reaction

• Endothermic reaction

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

If two substances react and the temperature of the mixture decreases. Example the athletic trainer gives you a pack that gets cold when you shake it.

• Exothermic reaction

• Endothermic reaction

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How many Hydrogen atoms are on the reactants side of the equation?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5