Please help it’s due today. I will give brainliest.

Answer:

both conserve mass

Explanation:

Answer:

B.both conserve mass.

1. John travels from the United States to Australia for the winter, but when he gets there it feels more like summer. Why?

Pleaseee help meeeeeee

What is the BEST scientific definition of the term “force”?

Please answer fast!
Where in an atom are protons located?
A.
in the nucleus
B.
in areas of probability
C.
in orbitals
D.
in the photons

A compound such as CaCl, would have an overall charge of?

what does science explain? (4 points)

A) moral values
B) biased opinion
C) meaning of life
D) natural phenomena

An atomic model shows 19 protons, 20 neutrons, and 19 electrons. What is the mass number of the atom?
A. 39
B. 20
C. 58
D. 19

when one gram of gasoline burns in a cars engine, the amount of energy given off is approximately 1.03x10^4 cal. express this quantity in joules. use 1 cal= 4.184 j​

10. How many protons, neutrons, and electrons are present in the
140 +3
Ce ion?

how many atoms are in SH2O4 ?

Convert the following number into scientific notation: 88,000,000.
A 8.8 x 10⁶

B. 88 x 10⁴

C 8.8 x10⁷

D. 8.8 x 10-⁷​

Earth is approximately 149,600,000 kilometers away from the sun. How would this distance be expressed in scientific notation?

Compared to gases liquids can be easily compressed. True or false?

The variable placed on the horizontal or x-axis of a graph is what variable

Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen. Which best describes the
reaction?
O The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the
products.
O The law of conservation of energy indicates the same amount of carbon will be found in the reactants as in the
products,
The law of conservation of mass indicates the same amount of glucose will be found in the reactants as in the
products.
The law of conservation of energy indicates the same amount of glucose will be found in the reactants as in the
products.

What causes a static charge

Sara slides down a playground slide. How will friction affect her as she slides?

1. Any atom that is electrically neutral must contain -

The model of a neutral element is shown below. Which particle determines the reactivity of the element?


A
B
C
D
​

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5
Calculate the mass of a liquid with a density of 2.5 g/mL and a volume of 15 mL.
7
Calcule la masa de un líquido con una densidad de 2.5 g/mL y un volumen de 15 mL.
A. 375 g
B. 3.75 g
C. 37.5 g

In my closet, I have 5 black shirts, 6 brown shirts, 3 light blue shirts, 5 white shirts, 2 green
shirts, 4 navy blue shirts. What is the total number of shirts?

This is a very long thing, Answer any of the questions that you can please anything helps just make sure you put the numbers for the questions you answer:

Question 1: Laws of Conservation of Matter and Energy (2 points)

a. Law of conservation of matter (1 point)

i. What does the law say about matter?



ii. What about matter can change and what does not change, according to the law?








b. Law of conservation of energy (1 point)

i. What does the law say about energy?



ii. What about energy can change and what does not change, according to the law?








Question 2: Phases of Matter (2 points)

a. What are the four states, or phases, of matter? Describe the shape and volume properties of each phase. Can they change, or are they fixed? (1 point)

i. _______________________

Shape:

Volume:

ii. _______________________

Shape:

Volume:

iii. _______________________

Shape:

Volume:

iv. _______________________

Shape:

Volume:
b. When heat energy is absorbed by matter, the matter's temperature increases. When heat energy is released by matter, the matter's temperature decreases. The matter can also change from one phase to another when heat energy is absorbed or released. Identify whether matter absorbs heat or releases heat as each of the following phase changes occur. (1 point)

i. From solid to liquid (melting)

ii. From liquid to solid (freezing or hardening)

iii. From liquid to gas (evaporation)

iv. From gas to liquid (condensation)

Question 3: Types of Energy (4 points)

a. List four kinds of energy. Give a brief definition of each. (1 point)


i. ______________________________________________________________


ii. ______________________________________________________________


iii. ______________________________________________________________


iv. ______________________________________________________________
b. Energy can change from one form to another. Describe the energy conversions in the following scenes. (1 point)

i. A kid falling out of a tree



ii. A scout rubbing sticks together to start a fire



iii. A man running a kerosene heater



c. What is the equation for calculating gravitational potential energy on the Earth? (1 point)



d. What is the equation for calculating kinetic energy (1 point)

48 points
Chemistry is the study of 1.
& its interactions. Matter has
2.___, takes up 3. ____& is made up of 4.____
from the
periodic table. Each element in the periodic table has a different
5. ____structure. You can use the information in the periodic square of
each element to model its basic atomic structure. The three subatomic
particles that make up atoms are the 6. ___charged protons & the
7. ____neutrons are both located in the nucleus, & the 8.____
charged electrons are found orbiting the nucleus. The element's
9. ____number is equal to the number of protons, & identifies the
element. The element's atomic mass is equal to the number of protons
plus neutrons in the 10.____
The atomic charge on atoms in the
periodic table is 11. ____; so the number of electrons in a neutral atom
is also equal to the 12. ____number. Charged atoms are called
13. ____If an atom looses an electron from its neutral state it becomes a
positively charged 14. ____If an atom gains an electron it becomes a
negatively charged 15. ____Atoms with a different number of
neutrons are called 16.___
and they also differ in mass. *

Which is another name for groups of elements?

A baby weighs 3.91 kg and measures 51.4 cm. Convert the baby's weight
to pounds and its length to inches

3. Two or more substances that are not
chemically combined...
Element
Mixture
Compound

Sodium easily combines with chorine is reactivity

Photosynthesis occurs in
the mitochondria
chloroplast

How is heat transferred when a person steps on hot sand?
O A. From the sand to the feet
O B. In both directions between the sand and the feet
C. From the feet to the sand
O D. Heat is not transferred.