IPC Chemical Reactions

Which of the following equations demonstrates the law of conservation of mass?

• 
• 
• 

Tags

NGSS.MS-PS1-5

Chemical reactions that demonstrate the law of conservation of mass...

• are balanced.

• have equal amounts of atoms in the products as the reactants.

• have not created nor destroyed matter.

• are unbalanced.

Tags

NGSS.MS-PS1-5

Does this reaction demonstrate the law of conservation of mass?

• Yes, because the amount of atoms are equal in the reactants and products.

• No, because there are unequal amounts of atoms in the reactants and the products.

• No, because the reactant and product model diagrams do not match.

• Yes, because the amount of atoms are unequal in the reactants and products.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which set of coefficient values balances the chemical reaction between magnesium and oxygen gas?

• 2, 1, 2

• 1, 1, 2

• 2, 2, 2

• 2, 2, 1

Tags

NGSS.MS-PS1-5

Which of the following sets of coefficients balances this chemical reaction?

• 1, 2, 1, 3

• 3, 2, 1, 3

• 3, 1, 1, 3

• 2, 1, 1, 3

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What type of chemical reaction absorbs heat from the surrounding environment?

• exothermic

• heterothermic

• endothermic

• homothermic

Tags

NGSS.MS-PS1-4

What type of chemical reaction releases heat into the surrounding environment?

• exothermic

• heterothermic

• endothermic

• homothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Which of the following is an example of an exothermic reaction? (Select all that apply)

• glow stick

• cold pack

• hot hands

• cooking an egg

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-5

Which of the following is an example of an endothermic reaction? (select all that apply)

• boiling water in a pot

• glow stick

• cold pack

• burning campfire

Tags

NGSS.MS-PS1-4

The part of the atom that is responsible for bonding atoms is --

• protons

• neutrons

• valence electrons

• nucleus

Tags

NGSS.HS-PS1-2