Chemical Reactions Amplify

In the equation,          2Mg + O₂ ---> 2MgO, which are the reactants?

• Mg and O

• MgO

• Mg and MgO

• O and MgO

Tags

NGSS.MS-PS1-2

In a chemical reaction, everything to the right of the arrow is called ______________.

• Products

• Yields

• Molecules

• Reactants

Tags

NGSS.MS-PS1-5

Which of the following is evidence of a chemical reaction?

• fizzing

• water changing to ice

• saltwater

• paper being cut in half

Tags

NGSS.MS-PS1-2

What are Chemical Reactions?

• It's when you mix substances.

• a process in which atoms rearrange to form new substances

• When something bubbles.

• letter and numbers showing the types and number of atoms

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following is NOT evidence that that a chemical reaction has occurred?

• produces light/heat

• production of a gas

• formation of a precipitate

• melting

Tags

NGSS.MS-PS1-2

Chemical reactions are easily reversible

• True

• False

Tags

NGSS.HS-PS1-6

In a word equation, the starting chemicals are called...

• reactants

• products

• ingredients

Tags

NGSS.MS-PS1-5

What is the conservation of mass?

• mass of reactants > mass of products

• mass of reactants < mass of products

• mass of reactants = mass of products

Tags

NGSS.MS-PS1-5

magnesium + oxygen --> magnesium oxide If you started with 5g of magnesium and 2.5g of oxygen, what mass of magnesium oxide would be produced?

• 5g

• 2.5g

• 7.5g

• 10g

Tags

NGSS.MS-PS1-5

When energy is transferred from the substances to the surroundings during a chemical reaction, what type of reaction is this?

• endothermic

• exothermic

• decomposition

• combustion

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5