Chemial Change - Concept Review

In a [physical, chemical] change, the identities of substances change and new substances form

• physical

• chemical

• .

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In the word equation hydrogen + oxygen + heat --> water, hydrogen is a [reactant, product], and water is a [reactant, product].

• reactant, reactant

• reactant, product

• product, reactant

• product, product

Tags

NGSS.MS-PS1-2

A [physcial, chemical] reaction rearranges the atoms that make up the reactant or reactants.

• physical

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

After a chemical reaction, [the same, different] atoms are present in the product or products.

• the same

• different

Tags

NGSS.MS-PS1-5

Atoms [are, are not] destroyed or created, so mass [does, does not] change during a chemical reaction.

• are, does

• are, does not

• are not, does not

• are not, does

Tags

NGSS.MS-PS1-5

Atoms are not created nor destroyed, so mass does not change during a chemical reaction is call

• the theory of mass.

• the theory of atoms.

• the law of conservation of mass.

• the law of chemical reations.

Tags

NGSS.MS-PS1-5

Chemical changes sometimes produce a gas, which you can detect by observing [bubbles, a precipitate] or by a change in [color, odor].

• bubbles, color

• bubbles, odor

• a precipitate, color

• a precipitate, odor

Tags

NGSS.MS-PS1-2

When two clear solutions mix and a precipitate forms, the mixture becomes [clear, cloudy].

• clear

• cloudy

Tags

NGSS.MS-PS1-2

When energy is released during a chemical reaction, temperature [increases, decreases]. Chemical reactions may also absorb energy, which is indicated by a(n) [increase, decrease] in temperature.

• increase, increase

• increase, decrease

• decreases, increase

• decrease, decrease

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A color change in a reaction system, such as when a inicator changes color, may indicate than a [chemical, physical] reaction has occurred and [new, no new ] substances have formed.

• chemical, new

• chemical, no new

• physical, new

• physical, no new

Tags

NGSS.MS-PS1-2